Exploit:W32/PDF-Dropper.Gen is a Generic Detection for a malicious PDF file that exploits a known vulnerability in Adobe Acrobat Reader to drop a trojan onto the affected machine. This detection is associated with a spam run reported on June 8, 2010.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
More details about the spam run are available from our Labs Weblog post.
The malicious PDF document is distributed as an file attachment to an e-mail message that has the following characteristics:
From: [random addresses] To:[random recipients] Subject: New Resume>>Please review my CV, Thank You!>> Attachment:resume.pdf
If the unsuspecting user opens the PDF attachment, the exploit is executed.
On execution, the exploit drops a variant from the Alureon or Trojan:W32/DNSChanger malware families.