It is a RAR (Roshal Archive) file, specifically a "split" or "spanned" volume. This means the original data was too large for a single file and was divided into multiple parts (e.g., part01, part02... part21).
Multi-part archives are sometimes used to bypass simple antivirus scanners that may not analyze a single segment of a larger, encrypted file. There is a high risk that files with this naming convention contain Trojans or Infostealers . Security Recommendations Gh0stb.part21.rar
If a hash (MD5/SHA-256) was provided by the original source, verify it to ensure the file hasn't been tampered with or replaced by a malicious version. It is a RAR (Roshal Archive) file, specifically
The file is a specific segment of a multi-part compressed archive typically associated with the distribution of large datasets, leaked information, or software packages. Due to its naming convention and common appearance in file-sharing contexts, it is frequently linked to high-volume data dumps or potentially malicious payloads. Technical Characteristics Multi-part archives are sometimes used to bypass simple