Trojan.Pidief.A

Trojan.Pidief.A is a Trojan horse that exploits the Adobe Acrobat Mailto PDF File Command Execution Vulnerability (BID 25748) in order to lower security settings. It may also download more malware on to the compromised computer.

Further Reading:
Security Response blog - When PDF's Attack... Again!

Protection

• Initial Rapid Release version October 23, 2007 revision 008
• Latest Rapid Release version November 19, 2009 revision 008
• Initial Daily Certified version October 23, 2007 revision 016
• Latest Daily Certified version November 19, 2009 revision 024
• Initial Weekly Certified release date October 24, 2007

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Medium
• Number of Infections: 50 - 999
• Number of Sites: 10+
• Geographical Distribution: Medium
• Threat Containment: Easy
• Removal: Easy

Damage

• Damage Level: Medium
• Payload: Lowers security settings.
  May download more malware.

Distribution

• Distribution Level: Low