Did you just run into a download or a file on your computer that has a digital signature from Innovative Systems LLC? Some of the security products refers to the detected files as Win32/JoyDownloader.D and PUP.Optional.OpenCandy. The detection rate for the Innovative Systems LLC files collected here is 19%. Please read on for more details.
You will typically notice Innovative Systems LLC when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screencap shows:

You can also view the Innovative Systems LLC certificate with the following steps:
Here's a screenshot of a file that has been signed by Innovative Systems LLC:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by Innovative Systems 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, and so on. You can also see the address for Innovative Systems LLC, such as the street name, city and country.
Thawte Code Signing CA - G2 and VeriSign Class 3 Code Signing 2010 CA has issued the Innovative Systems LLC certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the Innovative Systems LLC files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 13/56 | iExplorer_setup_3321.exe |
| 14/54 | flashplayer14_install_win_pi.exe |
| 5/53 | gomplayerensetup_2.26.exe |
| 12/56 | windowsupdateagent30-x86.exe |
| 7/53 | offer.exe |
Here's the detection names for the Innovative Systems LLC files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | AdLoad.OpenCandy, Generic.AB7, Generic.84A, OpenCandy.BED |
| AVware | Trojan.Win32.Generic!BT, Opencandy |
| Agnitum | Riskware.Agent! |
| AhnLab-V3 | PUP/Win32.OpenCandy, PUP/Win32.Agent |
| Avast | Win32:PUP-gen [PUP] |
| Avira | APPL/Downloader.Gen, ADWARE/InstallCore.Gen9 |
| Baidu-International | Adware.Win32.OpenCandy.BA |
| ClamAV | Win.Trojan.Agent-803351 |
| Comodo | ApplicUnwnt |
| DrWeb | Adware.OpenCandy.47, Adware.Downware.6712, Adware.OpenCandy.55, Adware.Downware.5295 |
| ESET-NOD32 | Win32/JoyDownloader.D, a variant of Win32/InstallCore.QH |
| Ikarus | PUA.JoyDownloader |
| Malwarebytes | PUP.Optional.OpenCandy |
| McAfee | Artemis!C5E8D0BFF605, Artemis!FC67B34E91B4, Artemis!2A2CC871B2C2, Artemis!1FC34F821322 |
| McAfee-GW-Edition | Heuristic.BehavesLike.Win32.Suspicious-PKR.G |
| Qihoo-360 | Win32/Virus.Adware.f22 |
| Sophos | Generic PUA GO |
| Symantec | Trojan.Gen.2 |
| TrendMicro | ADW_OPENCANDY |
| TrendMicro-HouseCall | Suspici.68433547, Suspicious_GEN.F47V0715, ADW_OPENCANDY, Suspici.F184F561 |
| VIPRE | Trojan.Win32.Generic!BT, Opencandy |
The detection percentage is based on the fact that I have gathered 272 scan results for the Innovative Systems LLC files. 51 of these scan reports came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: