Did you just find a download or a file on your computer that has a digital signature from AnVir Software? Some of the security products refers to the detected files as W32.HfsAdware.9A0E and Program.Unwanted.1331. The detection rate for the AnVir Software files collected here is 3%. Please read on for more details.
You'll probably notice AnVir Software when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the AnVir Software digital signature with the following procedure:
Here's a screenshot of a file signed by AnVir Software:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by AnVir Software and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also examine the address for AnVir Software, such as the street name, city and country.
COMODO RSA Code Signing CA and COMODO Code Signing CA 2 has issued the AnVir Software certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the AnVir Software files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/56 | anvirlauncher.exe |
| 1/57 | AnvirHook75_64.dll |
| 3/57 | anvir.exe |
| 3/54 | AnvirHook75.dll |
| 0/43 | AnvirHook75.dll |
| 0/47 | anvir64.exe |
Here's the detection names for the AnVir Software files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.18D |
| Bkav | W32.HfsAdware.9A0E |
| DrWeb | Program.Unwanted.1331, Program.Unwanted.416 |
| Rising | Malware.Undefined!8.C-NZdOF3EJnfH (Cloud) |
The detection percentage is based on the fact that I've collected 314 scan reports for the AnVir Software files. 8 of these scan reports came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: