Trojan-downloaders download and install new malware or adware on the targeted computer. The downloaded files include backdoors, bots, trojans, et cetera.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Agent.TPF primarily arrives as an attachment to spammed email messages containing the following subjects:
It uses the filename "Card.zip" which also contains a copy of itself called "card.scr". Files detected as Trojan-Downloader.Win32.Agent.tpf share many of the same characteristics as Trojan-Dropper.Win32.Agent.rek. See the description for Trojan-Dropper:W32/Agent.REK for details.