: Always run a virus scan on unknown archive files before attempting to extract them.

: If you intend to open it, ensure you have all corresponding parts (e.g., part2, part3) in the same folder.

RAR files of this naming convention are typically segments of a larger data set (part of a multi-volume archive) and are common in private file sharing or specific niche communities. Why a review isn't available

: Since this is "part 1," it is only a fraction of the total data. You would likely need "part 2" (and potentially more) to open and use the files inside.