Look for a README.txt or LICENSE file inside the archive (viewable via the WinRAR/7-Zip preview window without full extraction).
It can often "peek" inside the .rar to see if the internal files (like .exe or .js ) are flagged. 2. Sandbox Extraction If you must open it, use a or Virtual Machine : Welcome_to_Nicest_0.1-alpha.1.rar
If you need to know exactly what is inside this file without risking your computer, follow these steps: 1. Online Virus Scanning Upload the file to . It will scan the archive against 70+ antivirus engines. Look for a README