Is it a "Layout Only" or "LOD Only" mod for a game like Skyrim , Assetto Corsa , or SimCity ?
If you aren't 100% sure about the source, upload the file to VirusTotal . It will scan the archive against 70+ antivirus engines to ensure it's not a "Trojan" disguised as a project file.
Be careful. These are executable files. Do not run them unless you absolutely trust the source. 4. Scan for Safety
Right-click the file and select 7-Zip > Open archive . This lets you look at the file names and folder structure without actually extracting (running) anything.
Is it part of a segmented download (e.g., part 8 of a larger set)? 2. Safe Extraction