Did you just find a download or a file on your computer that is digitally signed by Zainuddin Nafarin? If so, please read on.
You'll typically see Zainuddin Nafarin when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Zainuddin Nafarin with the following steps:
Here is a screenshot of a file digitally signed by Zainuddin Nafarin:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by Zainuddin Nafarin and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view 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 Zainuddin Nafarin, such as the street name, city and country.
DigiCert SHA2 High Assurance Code Signing CA and DigiCert SHA2 Assured ID Code Signing CA has issued the Zainuddin Nafarin certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Zainuddin Nafarin files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 3/67 | smadav108.exe |
| 0/65 | SmadavProtect64.exe |
Here's the detection names for the Zainuddin Nafarin files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| NANO-Antivirus | Trojan.Win32.Johnnie.exyoyb |
| VBA32 | Trojan.Bublik |
| Zillya | Worm.RunouceCRTD.Win32.10736 |
The detection percentage is based on the fact that I have collected 132 scan results for the Zainuddin Nafarin files. 3 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers:
Banban writes