Did you just find a download or a file on your computer that has a digital signature from Pronto LLC? If so, please read on.
You will probably notice Pronto LLC when 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 additional details from the Pronto LLC digital signature with the following steps:
Here's a screenshot of a file signed by Pronto LLC:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by Pronto LLC 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, etc. You can also view the address for Pronto LLC, such as the street name, city and country.
Symantec Class 3 Extended Validation Code Signing CA has issued the Pronto LLC certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the Pronto LLC files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/51 | PriceFinderHelper.x64.dll |
| 0/51 | PriceFinderHelper.x64.dll |
| 0/50 | PriceFinderHelper.dll |
| 0/51 | PriceFinderHelper.exe |
| 0/47 | PriceFinderHelper.dll |
Here's the detection names for the Pronto LLC files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Malwarebytes | PUP.Optional.PriceFinder.A |
The detection percentage is based on that I've collected 250 scan results for the Pronto LLC files. 1 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: