Did you just stumble upon a download or a file on your computer that is digitally signed by UNLIMITED DOWNLOADS LLC? Some of the security products refers to the detected files as Adware.Plugin.76 and Heur.Agent/Gen-WhiteBox. The detection rate for the UNLIMITED DOWNLOADS LLC files collected here is 10%. Please read on for more details.
You will probably notice UNLIMITED DOWNLOADS LLC when running the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for UNLIMITED DOWNLOADS LLC with the following procedure:
Here's a screengrab of a file that has been signed by UNLIMITED DOWNLOADS LLC:

As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This means that the file has been published by UNLIMITED DOWNLOADS LLC and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can examine 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 view the address for UNLIMITED DOWNLOADS LLC, such as the street name, city and country.
DigiCert Assured ID Code Signing CA-1 has issued the UNLIMITED DOWNLOADS LLC certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the UNLIMITED DOWNLOADS LLC files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 5/48 | airDB24.exe |
Here is the detection names for the UNLIMITED DOWNLOADS LLC files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| DrWeb | Adware.Plugin.76 |
| SUPERAntiSpyware | Heur.Agent/Gen-WhiteBox |
| Sophos | Unlimited Downloads |
| TrendMicro-HouseCall | TROJ_GEN.F47V0614 |
| VIPRE | DownloadTerms (fs) |
The detection percentage is based on the fact that I've collected 48 scan results for the UNLIMITED DOWNLOADS LLC files. 5 of these scan results came up with some sort of detection. If you like, 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: