Opening the archive can expose your system to the payload.
Use updated antivirus software like Microsoft Defender to scan the specific file.
In rare, non-malicious contexts, "21825" appears in technical document identifiers, such as those found on the SEC.gov EDGAR database . However, these are almost never distributed as .rar files to the public. To help you more specifically, could you tell me:
If received via a work or personal email service, use the "Report Phishing" or "Report Spam" feature.
