Did you just stumble upon a file that has a digital signature from Bogdan Sharkov? If so, please read on.
You'll typically notice Bogdan Sharkov when running 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 Bogdan Sharkov with the following procedure:
Here is a screenshot of a file that has been digitally signed by Bogdan Sharkov:

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 Bogdan Sharkov and that no one has tampered with the file.
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, etc. You can also see the address for Bogdan Sharkov, such as the street name, city and country.
COMODO Code Signing CA 2 and COMODO RSA Code Signing CA has issued the Bogdan Sharkov certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Bogdan Sharkov files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/47 | Clownfish.exe |
| 1/48 | Clownfish.exe |
| 0/57 | Clownfish.exe |
| 0/57 | Clownfish.exe |
| 0/57 | Clownfish.exe |
| 0/55 | Clownfish.exe |
| 0/55 | Clownfish.exe |
| 0/54 | Clownfish.exe |
| 0/56 | Clownfish.exe |
Here is the detection names for the Bogdan Sharkov files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Comodo | Heur.Suspicious |
| TrendMicro-HouseCall | TROJ_GEN.F47V0803 |
The detection percentage is based on the fact that I have gathered 486 scan reports for the Bogdan Sharkov files. 3 of these scan reports came up with some sort of detection. You can view the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: