Could you please specify or what specific type of content you expect to find inside of it? The Unarchiver - App Store - Apple
Open the app, locate the downloaded file, and use the built-in "Unzip" function to access the internal files. TJAM_HADN.rar
Double-click the .rar file to let the application automatically extract the contents. Download an app like iZip (iOS) or WinZip (Android). Could you please specify or what specific type