|Detected||Jul 15 2011 05:41 GMT|
|Released||Jul 15 2011 07:36 GMT|
|Published||Sep 08 2011 09:22 GMT|
An exploit that uses the vulnerabilities in Adobe – Reader and Acrobat products for its implementation on the user's computer. The file is an XFA (XML Forms Architecture) containing malicious Java Script. 61136 bytes.
The malicious XFA form content is initialized and launched after opening a specially created infected PDF document containing this form. As the "initialize" event handler in the XFA form, it uses obfuscated malicious Java Script. After removing the obfuscation, the trojan uses the vulnerability which arises on account of over-filling the buffer when incorrectly processing arguments in "libtiff.dll" (CVE-2010-0188) to download the file located at the following link:
http://vaskda***e.ms/d.php?f=360&e=6The trojan then saves the file in the browser's temporary file directory:
%Temporary Internet Files%\<name of_temporary_file>After successfully saving the file, the infected file is then launched for execution. The downloaded file is 34304 bytes and is detected by Kaspersky Antivirus as Trojan-Ransom.Win32.PornoAsset.akv.Vulnerable products include Adobe Reader and Acrobat 8 (up to version 8.2.1) and 9 (up to version 9.3.1).
If your computer has not been protected with anti-virus software and has been infected with malware, you will need to take the following actions to delete this:
%Temporary Internet Files%
Exploits are programs that contain data or executable code which take advantage of one or more vulnerabilities in software running on a local or remote computer for clearly malicious purposes.
Often, malicious users employ an exploit to penetrate a victim computer in order to subsequently install malicious code (for example, to infect all visitors to a compromised website with a malicious program). Additionally, exploits are commonly used by Net-Worms in order to hack a victim computer without any action being required from the user.
Nuker programs are notable among exploits; such programs send specially crafted requests to local or remote computers, causing the system to crash.