Did you just run into a download or a file on your computer that is digitally signed by GamerForest? Some of the security products refers to the detected files as Trojan ( 004d2a371 ) and Trojan.Win32.Generic!BT. The detection rate for the GamerForest files collected here is 16%. Please read on for more details.
You'll typically notice GamerForest when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for GamerForest with the following procedure:
Here's a screenshot of a file signed by GamerForest:

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 GamerForest and that no one has tampered with the file.
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 see the address for GamerForest, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the GamerForest certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the GamerForest files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 9/55 | gfore.dll |
Here's the detection names for the GamerForest files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.856 |
| AVware | Trojan.Win32.Generic!BT |
| DrWeb | Adware.Superfish.245 |
| ESET-NOD32 | a variant of Win32/Packed.Komodia.D suspicious |
| Fortinet | PossibleThreat |
| K7AntiVirus | Trojan ( 004d2a371 ) |
| K7GW | Trojan ( 004d2a371 ) |
| Sophos | Generic PUA KA (PUA) |
| VIPRE | Trojan.Win32.Generic!BT |
The detection percentage is based on that I've gathered 55 scan reports for the GamerForest files. 9 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 has been done on certificates with the following serial numbers: