How to Remove Ads by PDF Viewer Completely

Can’t Remove PDF Viewer ads? This page includes detailed ads by PDF Viewer Removal instructions!

Ads by PDF Viewer here, Sponsored by PDF Viewer there, it seems that this PDF Viewer is the only online advertiser. Well, you have good reason to think so. After all, you can’t see advertisements by other marketers. This is so because your computer is infected with adware. This malicious utility is exposing you to numerous ads, as well as, blocking advertisements by its competitors. Thus, it robs you of your free choice of information sources. It is turning you into an easy target. Do yourself a favor, remove this parasite immediately. This app can never be beneficial to you. Yes, it displays coupons and discounts for products that you actually need. Think about this: how did it know what kind of coupons to display? The answer is right before your eyes. The adware is spying on you. It uses the collected data to select advertisements that will appeal especially to you. This is not the only use of the collected information. The malicious utility will sell it to third parties. And there are many potential buyers. After all, this data includes your email addresses and, in some cases, usernames and passwords. It will be wise to avoid logging into banking services and social media while this furtive tool remains active on your PC. Don’t put up with this! Track this parasite down and delete it on the spot!

Remove PDF Viewer

How did I get infected with?

To see ads by PDF Viewer you must have its software installed on your machine. Do you remember installing something like that recently? It is not a surprise if you don’t. There are many ways for an adware to travel the Internet. Freeware bundling, torrents, fake software updates, and the good old spam emails are just the most commonly used methods. Download your software from reliable websites only. If you see an alert that some app of yours is outdated, don’t immediately click on the message. Go to the vendor’s official website and download the newest version from there. Scammers often create malicious ads that look like legit messages. However, if you click on such an alert, malware will be downloaded directly to your computer. Be careful what you do online. The Internet is bursting with dangerous parasites. However, to succeed, all those infections rely on one thing — your negligence. When installing a program, opt for advanced installation wizard. Be prepared. This method will be described as a suitable choice for IT experts only. Yet, there is nothing complicated in it. It is a simple step-by-step installation wizard. Don’t hesitate to select it. Only by using it can you stop the installation of all extra apps that came along. His method is known as bundling. Developers attach additional apps to the installation files of many free programs. Therefore, don’t rush through the installation process. We recommend deselecting all extras. Those tools may look useful, but you can never be sure what those third party apps are programmed to do. Read the terms and conditions. If you spot anything out of the ordinary, abort the installation immediately. Your computer’s security is your responsibility and yours only.

Why is this dangerous?

All ads by PDF Viewer are potentially dangerous. The adware behind them uses a pay-per-click marketing system. For every ad you click on, the owners of the furtive app will be paid. It is in their best interest to expose you to as many ads as possible. However, your security is no concern of theirs. Anyone can use the adware to promote anything. Some of the ads you are seeing may be a part of a scam. Hackers often use adware applications to spread malicious content. If you have the misfortune to click on a corrupted ad, you will be redirected to an infected website. Oftentimes, one click is all it takes for a virus to be downloaded to your computer. You can’t trust anything you see on your display while this parasite remains active. Luckily, we can help you. Use our guide and remove this threat manually. Of course, you can use an automated solution if you are not confident in your computer skills. Don’t waste time. Take action now!

How to Remove PDF Viewer virus

The PDF Viewer infection is specifically designed to make money to its creators one way or another. The specialists from various antivirus companies like Bitdefender, Kaspersky, Norton, Avast, ESET, etc. advise that there is no harmless virus.

If you perform exactly the steps below you should be able to remove the PDF Viewer infection. Please, follow the procedures in the exact order. Please, consider to print this guide or have another computer at your disposal. You will NOT need any USB sticks or CDs.

WARNING! Stopping the wrong file or deleting the wrong registry key may damage your system irreversibly.
If you are feeling not technical enough just use Spyhunter Professional Malware Removal Tool to deal with the problem!
>>Download SpyHunter – a Professional Remover.

Please, keep in mind that SpyHunter’s scanner tool is free. To remove the PDF Viewer infection, you need to purchase its full version.

STEP 1: Track down PDF Viewer in the computer memory

STEP 2: Locate PDF Viewer startup location

STEP 3: Delete PDF Viewer traces from Chrome, Firefox and Internet Explorer

STEP 4: Undo the damage done by the virus

STEP 1: Track down PDF Viewer in the computer memory

  • Open your Task Manager by pressing CTRL+SHIFT+ESC keys simultaneously
  • Carefully review all processes and stop the suspicious ones.


  • Write down the file location for later reference.

Step 2: Locate PDF Viewer startup location

Reveal Hidden Files

  • Open any folder
  • Click on “Organize” button
  • Choose “Folder and Search Options”
  • Select the “View” tab
  • Select “Show hidden files and folders” option
  • Uncheck “Hide protected operating system files”
  • Click “Apply” and “OK” button

Clean PDF Viewer virus from the windows registry

  • Once the operating system loads press simultaneously the Windows Logo Button and the R key.


  • A dialog box should open. Type “Regedit”


Depending on your OS (x86 or x64) navigate to:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] or
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] or

  • and delete the display Name: [RANDOM]

delete backgroundcontainer

  • Then open your explorer and navigate to: %appdata% folder and delete the malicious executable.

Clean your HOSTS file to avoid unwanted browser redirection

Navigate to %windir%/system32/Drivers/etc/host

If you are hacked, there will be foreign IPs addresses connected to you at the bottom. Take a look below:


STEP 3 : Clean PDF Viewer traces from Chrome, Firefox and Internet Explorer

  • Open Google Chrome

  • In the Main Menu, select Tools then Extensions
  • Remove the PDF Viewer by clicking on the little recycle bin
  • Reset Google Chrome by Deleting the current user to make sure nothing is left behind

disable PDF Viewer from chrome

  • Open Mozilla Firefox

  • Press simultaneously Ctrl+Shift+A
  • Disable the unwanted Extension
  • Go to Help
  • Then Troubleshoot information
  • Click on Reset Firefox

remove PDF Viewer from firefox

  • Open Internet Explorer

  • On the Upper Right Corner Click on the Gear Icon
  • Click on Internet options
  • go to Toolbars and Extensions and disable the unknown extensions
  • Select the Advanced tab and click on Reset

remove PDF Viewer from ie

  • Restart Internet Explorer

Step 4: Undo the damage done by PDF Viewer

This particular Virus may alter your DNS settings.

Attention! this can break your internet connection. Before you change your DNS settings to use Google Public DNS for PDF Viewer, be sure to write down the current server addresses on a piece of paper.

To fix the damage done by the virus you need to do the following.

  • Click the Windows Start button to open the Start Menu, type control panel in the search box and select Control Panel in the results displayed above.
  • go to Network and Internet
  • then Network and Sharing Center
  • then Change Adapter Settings
  • Right-click on your active internet connection and click properties. Under the Networking tab, find Internet Protocol Version 4 (TCP/IPv4). Left click on it and then click on properties. Both options should be automatic! By default it should be set to “Obtain an IP address automatically” and the second one to “Obtain DNS server address automatically!” If they are not just change them, however if you are part of a domain network you should contact your Domain Administrator to set these settings, otherwise the internet connection will break!!!

You must clean all your browser shortcuts as well. To do that you need to

  • Right click on the shortcut of your favorite browser and then select properties.


  • in the target field remove PDF Viewer argument and then apply the changes.
  • Repeat that with the shortcuts of your other browsers.
  • Check your scheduled tasks to make sure the virus will not download itself again.

How to Permanently Remove PDF Viewer Virus (automatic) Removal Guide

Please, have in mind that once you are infected with a single virus, it compromises your system and let all doors wide open for many other infections. To make sure manual removal is successful, we recommend to use a free scanner of any professional antimalware program to identify possible registry leftovers or temporary files.

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