Keep in mind that Sorcerer is not free or shareware. I guess the best description for it would be orphaned ware. The company who wrote it no longer exists (sort of, I think the same basic people do Krypto500 now) and it has not been officially distributed for a long time. So many of the download sites for the software are from suspicious sources, like crack and hack sites.
The original software itself had no real issues with trojans or malware, but who knows what has been done to it since, or what is in the package you DL from a hack / crack site.
The software is also rather old, and can have issues with modern hardware and OS's.
Sorcerer will demod S4285, however keep in mind most S4285 is encrypted, so you get nothing from it. There are a few unencoded S4285 outlets, and Sorcerer will work fine on those.
T!