If you are looking for security information, researchers have documented a strain of VoidCrypt Ransomware that appends a .rar extension to victims' files.
Technical write-ups on sites like PCrisk explain how this malware operates and provide removal guides. 2. "Void" in Programming (C/C++) Void.rar
"RAR" can refer to the Red cell distribution width to Albumin Ratio , used in articles predicting mortality risks in ICU patients. Object oriented C - Habr If you are looking for security information, researchers