Did you just find a download or a file on your computer that is digitally signed by Plugin Update S.L.? Some of the security products refers to the detected files as Unwanted-Program ( 0040f95a1 ) and Generic.AF2. The detection rate for the Plugin Update S.L. files collected here is 37%. Please read on for more details.
You will typically see Plugin Update S.L. when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Plugin Update S.L. certificate with the following procedure:
Here is a screenshot of a file signed by Plugin Update S.L.:

As you can see in the screencap above, Windows states that "This digital signature is OK". This implies that the file has been published by Plugin Update S.L. 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 view the address for Plugin Update S.L., such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Plugin Update S.L. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Plugin Update S.L. files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 18/53 | Setup (1).exe |
| 18/54 | Setup.exe |
| 16/55 | Setup (2).exe |
| 20/55 | driver_updater (1).exe |
| 20/55 | driver_updater.exe |
| 20/56 | Setup.exe |
| 20/56 | Player Setup.exe |
| 22/56 | Setup (3).exe |
| 29/56 | Setup (1).exe |
Here's the detection names for the Plugin Update S.L. files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Gen:Variant.Kazy.521151 |
| AVG | Generic.AF2, Win32/DH{gRIxfX5QgQd5VE8VUYEVgQkcU4ETQYEP} |
| AVware | Trojan.Win32.Generic!BT, DomaIQ (fs), Adware.SoftPulse |
| Ad-Aware | Gen:Variant.Application.Bundler.SoftPulse.4, Gen:Variant.Adware.Graftor.154268 |
| AhnLab-V3 | PUP/Win32.SoftPulse, Win-PUP/SoftPulse |
| Antiy-AVL | RiskWare[Downloader:not-a-virus]/Win32.DriverUpd, GrayWare[AdWare:not-a-virus]/Win32.SoftPulse.ybr, GrayWare[AdWare:not-a-virus]/Win32.SoftPulse.xvm |
| Avast | Win32:SoftPulse-BB [PUP], Win32:SoftPulse-BE [PUP], Win32:SoftPulse-CU [PUP] |
| Avira | TR/Dropper.Gen, APPL/Softpulse.aone |
| BitDefender | Gen:Variant.Application.Bundler.SoftPulse.4, Gen:Variant.Kazy.521151 |
| ClamAV | Win.Adware.MultiPlug-31138, Win.Adware.Agent-36456 |
| Comodo | Application.Win32.SoftPulse.D |
| DrWeb | Trojan.Domaiq.10, Adware.SoftPulseENT.1, Adware.SoftPules.3, Trojan.DownLoader12.9817 |
| ESET-NOD32 | a variant of Win32/SoftPulse.Q, a variant of Win32/SoftPulse.R, a variant of Win32/SoftPulse.S, a variant of Win32/SoftPulse.V |
| Emsisoft | Gen:Variant.Kazy.521151 (B) |
| F-Prot | W32/A-3f31f6a7!Eldorado, W32/S-e8f52f8c!Eldorado |
| F-Secure | Gen:Variant.Application.Bundler, Gen:Variant.Kazy.521151 |
| Fortinet | W32/AntiAV.LGC!tr |
| GData | Gen:Variant.Application.Bundler.SoftPulse.4, Win32.Application.SoftPulse.J, Win32.Application.DriverUpd.C, Gen:Variant.Kazy.521151 |
| Jiangmin | AdWare/SoftPulse.aaaz |
| K7AntiVirus | Unwanted-Program ( 0040f95a1 ), Trojan ( 0040f96f1 ), Unwanted-Program ( 0040f9b01 ) |
| K7GW | Unwanted-Program ( 0040f95a1 ), Unwanted-Program ( 0040f96f1 ), Unwanted-Program ( 0040f9b01 ) |
| Kaspersky | not-a-virus:Downloader.Win32.DriverUpd.iwr, not-a-virus:AdWare.Win32.SoftPulse.ybr, not-a-virus:AdWare.Win32.SoftPulse.xvm |
| Malwarebytes | PUP.Optional.DomaIQ, PUP.Optional.SmartSec, PUP.Optional.SoftPulse |
| McAfee | Socrydo, SoftPulse |
| McAfee-GW-Edition | BehavesLike.Win32.CryptDoma.dc, BehavesLike.Win32.CryptDoma.bc, BehavesLike.Win32.DownloaderFenomen.tc, BehavesLike.Win32.CryptDoma.tc |
| MicroWorld-eScan | Gen:Variant.Application.Bundler.SoftPulse.4, Gen:Variant.Kazy.521151 |
| NANO-Antivirus | Trojan.Win32.DriverUpd.dilccw, Trojan.Win32.DriverUpd.dipney, Trojan.Win32.SoftPules.djqunq, Trojan.Win32.DriverUpd.dmkovg |
| Panda | Trj/Genetic.gen |
| Sophos | SoftPulse |
| VBA32 | Signed-Adware.Softpulse |
| VIPRE | Trojan.Win32.Generic!BT, DomaIQ (fs), Adware.SoftPulse |
| Zillya | Adware.Agent.Win32.37789 |
The detection percentage is based on the fact that I've gathered 496 scan reports for the Plugin Update S.L. files. 183 of these scan results came up with some sort of detection. If you like, you can review 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: