: If this file appeared unexpectedly, it may be part of a phishing or "malvertising" campaign aimed at delivering spyware or ransomware. Ransomware - FBI

: 7-Zip files are frequently used to hide malicious executables because many older antivirus scanners do not deeply inspect .7z archives compared to standard .zip files.

: Use an online multi-engine scanner like Hybrid Analysis or VirusTotal to check the SHA256 hash of the archive for known threats.