Funnies.rar -

if the file was an unexpected email attachment or from an unverified website.

A free, open-source alternative that handles almost all compressed formats. Right-click the File: Select "Extract files..." to choose a destination. Funnies.rar

Once unpacked, look at the extensions. Common "funny" files are .jpg , .png , .gif (images), or .mp4 (videos). if the file was an unexpected email attachment

To "look at" or extract a .rar file, you need specialized software, as Windows and macOS do not always support this format natively. WinRAR: The official tool for .rar files. you need specialized software