Did you just find a file that has a digital signature from Hithink RoyalFlush Information Network Co.,Ltd.? If that's the case, please read on.
You'll typically see Hithink RoyalFlush Information Network Co.,Ltd. when running the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Hithink RoyalFlush Information Network Co.,Ltd. with the following procedure:
Here is a screenshot of a file signed by Hithink RoyalFlush Information Network Co.,Ltd.:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Hithink RoyalFlush Information Network Co.,Ltd. and that no one has tampered with the file.
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, and so on. You can also see the address for Hithink RoyalFlush Information Network Co.,Ltd., such as the street name, city and country.
DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 has issued the Hithink RoyalFlush Information Network Co.,Ltd. certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Hithink RoyalFlush Information Network Co.,Ltd. files I have collected, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the Hithink RoyalFlush Information Network Co.,Ltd. files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by Hithink RoyalFlush Information Network Co.,Ltd..
| Detection Ratio | File Name |
|---|---|
| Not available | lctd.exe |
The analysis has been done on certificates with the following serial numbers: