RAR can embed hidden or system files (e.g., desktop.ini , .DS_Store ). While typically benign, they can sometimes be used to hide malicious scripts. A quick directory listing ( dir /a on Windows, ls -a on Unix) will reveal everything.
: The .rar extension indicates that this is a RAR archive file. RAR is a proprietary archive file format used for data compression and archiving. JUQ-673-u.part11.rar
Happy extracting, and stay safe out there! RAR can embed hidden or system files (e