Think about any software you installed or large file transfers you initiated right before this file appeared. 2. Inspect Safely
Did you recently or sync a large folder?
Because the origin of this specific file cannot be verified through public databases, you should handle it with caution. 1. Identify the Source
Upload the file to VirusTotal to have it scanned by dozens of antivirus engines simultaneously.
If the file belongs to a program you use (like a video editor or cloud sync tool), it is generally safe to leave alone or delete if you need to clear space.