HTML/Malicious.PDF.Gen Removal Guide

Hey, there. My computer is encountering a big staff now. HTML/Malicious.PDF.Gen has been detected by Norton on my computer. But it can’t remove this Trojan. I am so nervous and scared. Will this Trojan damage my system if I can’t remove it now? If yes, what should I do now? It is said only manual removal way can get rid of this Trojan completely. Unfortunately, I am really a computer idiot. How can I do that? Is there anyone can help me to clean this virus away from my computer? Thank you very much!

A Brief Description of This Malicious Trojan

HTML/Malicious.PDF.Gen is classified as a Trojan infection which is produced to attack computer users around the global. This Trojan is a PDF file that is an unwanted application which is used to infect computers with lots of threats by taking advantage of vulnerability in Adobe software. If you use the malicious program, there may be third parties which will install a backdoor on the targeted computer. Once this program’s backdoor installed successfully on your computer, this backdoor may be used by third parties to dive into your computer in order to record all your information, install other threats or control the infected computer from a remote location. All these things may take place as the threatening PDF file used in the Trojan attack may be tailored specifically to target specific victims and may be a tool used by cybercrooks for industrial espionage and political attacks. Moreover, this Trojan file may also be detected as TR/Drop.Agent.DT, TR/Drop.Rotbrow.A or a variety of other aliases. So if you get a notification about this Trojan, you are suggested to take quick measures to get rid of this malicious Trojan without delay.

How malicious HTML/Malicious.PDF.Gen it is! You may not think of how terrible this Trojan is. This Trojan may affect most computers running versions of the Windows operating system, including most versions prior to Windows 7 such as Windows 8, Windows 8.1, Windows XP and Windows Vista. The main goal of this risky Trojan is to install a corrupted file on your computer which exploits vulnerabilities in Acrobat Reader to execute the threatening code. This Trojan’s payload may connect to a remote server and download threatening components and install them on the infected computer. Besides, it may establish connections with unsafe URLs and relay information about the infected computer. You may be redirected to the suspicious websites it added on your computer automatically. Additionally, this Trojan has the ability to open a port that gives third parties the means to access the victim’s computer. Your computer may be ruined badly due to this Trojan. Your computer permanence will be slow down as well. Most this virus attacks take advantage of versions 8.0 to 9.2 of Adobe Acrobat Reader, although it is likely that earlier versions of this popular software may also be affected. This Trojan is commonly spread by using spam email messages or specific phishing emails designed to trick a specific target within a company or organization. So you should be aware of your installation action on your computer. Once you note that your computer is infected by dangerous Trojan, manual removal method is recommended to get rid of this virus as soon as you can.

Processing manual removal should have a certain level of computer literacy. If you are not sure how to start or afraid of making any critical damage on the computer system, please open a live chat with YooCare Expert now!

What Will This Trojan Actually Do on Your Computer?

1. Desktop background image and Browser homepage settings are changed. Google, Yahoo Searches are redirected.
2. It may slow down your computer considerably and you will feel like your computer is stuck. This includes opening programs, shutting down your computer, and slow Internet.
3. It is capable to corrupt your windows registry and uses it to deploy annoying pop up ads out of nowhere. You will get many unwanted pop-ups on your computer.

Note: No matter how the virus accesses your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of HTML/Malicious.PDF.Gen, professional manual guide is needed.

About Trojan Virus Removal:

Currently many computer users had the same experience that this virus couldn’t be removed by any anti-virus applications. So the manual approach is always required to combat this virus. And here is the step-by-step removal guide for all computer users.

1. End the malicious process from Task Manager.

Once HTML/Malicious.PDF.Gen is installed, computer user may notice that CPU usage randomly jumps to 100 percent. At any time Windows always has many running processes. A process is an individual task that the computer runs. In general, the more processes, the more work the computer has to do and the slower it will run. If your system’s CPU spike is constant and remain at a constant 90-95%, users should check from Task Manager and see if there is a suspicious process occupying system resources and then end it immediately.

(The name of the virus process can be random.)

Press Ctrl+Shift+Esc to quickly bring up Task Manager Window:

task manager
2. Show hidden files and folders.

Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.

Click the View tab.

Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.

Folder Options

3. Open Registry entries. Find out the malicious files and entries and then delete all.

Attention: Always be sure to back up your PC before making any changes.

a. Press Windows key + R to open Run box. In the “Open” field, type “regedit” and click the “OK” button.


Then a Registry Editor window will pop up as the following picture shows:

registry editor

b. Search malicious files and registry entries and then remove all of them:

%AllUsersProfile%\Application Data\.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\[random]
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Temp

Video Shows You How to Safely Modify Windows Registry Editor:


To make a conclusion, HTML/Malicious.PDF.Gen is risky and tricky Trojan virus which can sneak into your computer with attaching itself into a third party program. Once this Trojan accessed your computer, your computer registry may be changed without your knowledge. Your default homepage and browser settings may be modified as well. It may attack the commonly used browsers likes Internet Explorer, Google Chrome, Mozilla Firefox. It may redirect you to visit some unsafe websites again and again. Otherwise, it is capable of destroying your security system severely. As a result, other infections may get into your computer more easily. Due to this Trojan, you would not use your computer normally. To get rid of this vicious Trojan is an important task which should be done once it is found on your computer.

Note: Still have trouble in removing this virus? If you don’t want to mess up your whole PC, Please contact YooCare Experts for instant help now.

Published by on December 8, 2014 9:43 pm, last updated on December 8, 2014 9:43 pm

Leave a Reply

Problems with your PC, Mac or mobile device?

Live Chat Now

Thanks for using YooCare Services!

Here're some of the support team members who are passionate about their works and support our customers 24/7.

As Seen On