: An open-source tool that supports over 200 archive formats, including RAR.

The file is a compressed archive that likely contains a portable version of a software application. Because the filename begins with a random-looking string ("sjdjfut"), it is highly recommended to scan it with antivirus software before opening.

: Use the program's interface to locate and extract your sjdjfut8.1.Portable.rar file.

: Save the portable utility (like PeaZip Portable) to your computer or a USB drive.