Compressed files are a common way to distribute malware because the contents are hidden until opened. If you do not recognize the source of "AN (3).rar," it is recommended to: Scan it with an antivirus tool like Malwarebytes .
If this is from a workspace or email, it may represent the third revision of a project titled "AN." How to Access the Content AN (3).rar
Most web browsers automatically add "(1)", "(2)", or "(3)" to a filename if you download the same file multiple times to the same directory. Compressed files are a common way to distribute
Use apps like RAR (by RARLAB) on Android or iZip on iOS. Safety Note Use apps like RAR (by RARLAB) on Android or iZip on iOS
To see what is inside "AN (3).rar," you will need an extraction utility since Windows and macOS do not always support RAR files natively: