Unless you are part of a specific community that has verified , it is best to avoid downloading it. For official medical "MIR" forms, manufacturers should refer to the latest Veeva Safety documentation or the official European Commission helptext. PMSV reporting forms - Public Health - European Commission
The inclusion of "Fan" in the filename suggests it could be a community-made modification (mod) for a game or a collection of fan art related to a specific media franchise from September 2022. Download Mir Fan092022 rar
If the archive is only a few kilobytes but claims to be a large software update or video, it is likely a phishing tool or a virus. Conclusion Unless you are part of a specific community