This is a container file created by WinRAR, used to bundle multiple files together and compress them to save space [1].
Once extracted, you will likely see 4 separate files ( sv1 , sv2 , sv3 , sv4 ). sv1-4_v.rar
Always right-click the RAR file and select "Scan with [Your Antivirus]" before extracting, especially if the file came from an untrusted source, to ensure it does not contain malicious software [2]. Do not extract files from unknown sources. This is a container file created by WinRAR,