Did you just run into a download or a file on your computer that has been digitally signed by Boian Mihailov? Some of the security products refers to the detected files as Adware.Keenm.1 and Backdoor.Bot.cs. The detection rate for the Boian Mihailov files collected here is 7%. Please read on for more details.
You will probably see Boian Mihailov when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the Boian Mihailov certificate with the following procedure:
Here is a screengrab of a file digitally signed by Boian Mihailov:

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 Boian Mihailov 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 see the address for Boian Mihailov, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the Boian Mihailov certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Boian Mihailov files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 4/55 | topshape_ch.exe |
Here's the detection names for the Boian Mihailov files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| DrWeb | Adware.Keenm.1 |
| Jiangmin | Backdoor.Bot.cs |
| Malwarebytes | PUP.Optional.TopShape |
| McAfee-GW-Edition | BehavesLike.Win32.Suspicious.th |
The detection percentage is based on that I have collected 55 scan results for the Boian Mihailov files. 4 of these scan results came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: