In bibliometric studies of historical journals, "Adr'rar" (likely referring to the Adrar region) is listed as an entry or citation within specific volumes of La Revue Africaine . An "adr.rar" file in this context would likely be a compressed collection of scanned journal pages or metadata.
To provide a more helpful review, could you clarify or what it is supposed to contain (e.g., a game mod, a trading indicator, or historical documents)? La revue africaine 1856-1961: etude bibliométrique adr.rar
If you have encountered this file on a peer-to-peer sharing site or as an unsolicited email attachment: La revue africaine 1856-1961: etude bibliométrique If you
If it was downloaded from a specific forum (like a gaming or trading community), refer back to that community's specific documentation for instructions. In bibliometric studies of historical journals
Because it is a generic name, it is a common mask for malware or "trojanized" software.