This will show if any antivirus engines flag the archive as a threat. Use a tool like 7-Zip to "Open Archive" (don't "Extract"). Look at the filenames inside.
Files with randomized strings (like GhotL3mtzz ) are often generated by: Renaming attachments for scanning. task.GhotL3mtzz.rar
Malware downloading additional "tasks" or payloads. Scan with VirusTotal Go to VirusTotal . This will show if any antivirus engines flag
Check the "Modified" dates to see when the content was created. task.GhotL3mtzz.rar