Did you just find a download or a file on your computer that has been digitally signed by Gemfor s.r.o.? If that's the case, please read on.
You'll typically notice Gemfor s.r.o. when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Gemfor s.r.o. with the following procedure:
Here's a screencap of a file that has been digitally signed by Gemfor s.r.o.:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This implies that the file has been published by Gemfor s.r.o. and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view 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 Gemfor s.r.o., such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA and VeriSign Class 3 Code Signing 2004 CA has issued the Gemfor s.r.o. certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Gemfor s.r.o. files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/57 | Internet Assistant.exe |
| 0/57 | ameisvc.exe |
Here is the detection names for the Gemfor s.r.o. files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Win32/DH{DyQD?} |
The detection percentage is based on that I've gathered 114 scan reports for the Gemfor s.r.o. files. 1 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: