If the "pack" is only a few kilobytes but claims to be a large game mod, it is likely a shortcut to malware.
Upload the file to VirusTotal to scan it against 70+ antivirus engines. This is critical for generic "pack" files. pack 1203.rar
If the RAR asks for a password and directs you to a survey website to get it, it is a scam. If the "pack" is only a few kilobytes
Before extracting a file with a generic name like this, you should perform these security checks: pack 1203.rar
Avoid running any .bat , .exe , or .vbs files found inside the archive unless you are 100% certain of the source.