Follow:

 

Exploit:Win32/Pidief.A


Exploit:Win32/Pidief.A is a detection for an exploit that targets a Portable Document Format (PDF) vulnerability. The critical vulnerability could result in the installation of additional malware when a malicious PDF document is opened using Adobe Reader version 9, or earlier.


What to do now

Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.

Threat behavior

Exploit:Win32/Pidief.A is a detection for an exploit that targets a Portable Document Format (PDF) vulnerability. The critical vulnerability could result in the installation of additional malware when a malicious PDF document is opened using Adobe Reader version 9, or earlier.
 
Installation
This exploit may be introduced into the system by viewing or opening a malicious PDF document hosted on a Web site or attached to an e-mail message. Opening the malicious PDF document in an unprotected environment could activate the exploit code on vulnerable systems.
 
Payload
Downloads Malware
Malicious PDF documents contain an obfuscated JavaScript that when executed, triggers a buffer overflow in Adobe Acrobat. In the wild, exploits have been observed to decrypt and drop the following files:
 
%TEMP%\svchost.exe - Trojan:Win32/Redosdru.A
%TEMP%\temp.exe - Trojan:Win32/Redosdru.B
<system folder>\<random characters>.dll - Trojan:Win32/Redosdru.E
 
The above mentioned malware attempts to download other malware using HTTP protocol from the domain '3322.org'.
 
Analysis by Vitaly Zaytsev

Symptoms

There are no common symptoms associated with this threat. This exploit is activated when opening malicious PDF documents on vulnerable computers. Alert notifications from installed antivirus software may be the only symptom(s).

Prevention


Alert level: Severe
First detected by definition: 1.51.657.0
Latest detected by definition: 1.117.2303.0 and higher
First detected on: Feb 17, 2009
This entry was first published on: Feb 23, 2009
This entry was updated on: Apr 17, 2011

This threat is also detected as:
  • APSA09-01 (other)
  • CVE-2009-0658 (other)
  • TA09-051A (other)
  • VU905281 (other)
  • Mal/JSShell-B (Sophos)
  • Bloodhound.PDF.8 (Symantec)