Did you just find a file that has a digital signature from Virtual Desktop, Inc.? If so, please read on.
You will probably notice Virtual Desktop, Inc. 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 Virtual Desktop, Inc. certificate with the following steps:
Here's a screenshot of a file signed by Virtual Desktop, Inc.:

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 Virtual Desktop, Inc. and that the file has not been tampered with.
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 examine the address for Virtual Desktop, Inc., such as the street name, city and country.
DigiCert EV Code Signing CA (SHA2) has issued the Virtual Desktop, Inc. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the Virtual Desktop, Inc. files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/66 | VIRTUA~3.DLL |
| 0/68 | VIRTUA~3.DLL |
| 0/67 | VIRTUA~3.DLL |
| 0/68 | VIRTUA~3.DLL |
| 0/70 | VIRTUA~3.DLL |
| 0/66 | VIRTUA~4.DLL |
| 0/69 | VIRTUA~3.DLL |
| 0/68 | VIRTUA~3.DLL |
| 0/52 | VIRTUA~3.DLL |
| 0/64 | VIRTUA~3.DLL |
The detection percentage is based on that I've collected 1663 scan reports for the Virtual Desktop, Inc. files. 0 of these scan reports came up with some sort of detection. You can view 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: