Distributing large datasets across newsgroups or hosting sites frequently involves obfuscated names to prevent automated flagging.
This indicates a "split" archive. Large files are often broken into smaller pieces (e.g., .001 , .002 , .003 ) to bypass file size limits on certain storage systems (like FAT32) or to make uploading/downloading more manageable [1, 2]. ZZLSWRDHMP.7z.002
Backup software often uses randomized strings for security and to avoid filename collisions. ZZLSWRDHMP.7z.002