High. Be extremely cautious. If you did not personally create this backup or receive it from a verified contact, it could be a delivery method for malware or spyware .
The digits 20210612 confirm the media was archived or created on June 12, 2021. Download AUD 20210612 WA0131 zip
Check your phone's file manager under WhatsApp > Media > WhatsApp Audio . Download AUD 20210612 WA0131 zip
If you see the name in a chat but cannot play it, the file may have been moved or deleted from your internal storage . Download AUD 20210612 WA0131 zip
While the original file was likely an audio format (like .opus or .m4a ), it has been packaged into a .zip file, possibly for bulk sharing or storage. Security and Safety Review