Be wary of files that appear as document.pdf.exe inside the archive; these are almost certainly malicious executables .
Hackers often exploit known bugs in unarchiving software. For example, CVE-2025-8088 is a high-severity path traversal vulnerability that allows malicious files to write to arbitrary locations on your system when opened. 21987.rar
Unless you explicitly requested 21987.rar from a trusted source, the safest action is to delete it immediately. Be wary of files that appear as document
Before opening, upload the file to VirusTotal to see if multiple antivirus engines flag it as malicious. 21987.rar
If you have the technical skill, open suspicious files in a virtual machine or a sandbox (like Windows Sandbox ) to isolate any potential infection.