The trojan downloader family consists of dozens of different variants. The main characteristic of these downloaders is that they hiddenly download and run executable files on a user's computer.
Many of these downloaders are compressed with different file compressors to reduce their size and to hide their contents from users' eyes.
These Trojans are typically distributed via email attachments.
For the disinfection instructions for this type of malware please refer to this webpage:
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.
Variant:Trojan-Downloader.Win32.Vidlo.q
This variant was distributed widely in July 2005, as fake bill from Deutsche Telekom. The filename used was rechnung.pdf.exe.