Possibly a mass mailing worm
F-Secure Anti-Virus uses generic, heuristic methods to detect unknown harmful programs. These methods are not foolproof, and will miss some harmful programs while sometimes labeling clean programs as possibly destructice.
When you encounter a file labeled as "Possibly infected", send a sample to our sample submission address for further analysis.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.
You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.