Use a reputable antivirus like Malwarebytes or Bitdefender to check for any background processes that may have started.

Scammers create millions of fake pages with random alphanumeric strings (like "Pay 20857") to catch people searching for specific transaction IDs, payment receipts, or leaked content.

Ensure "File Name Extensions" are visible in your system settings. A file named Pay_20857.mp4.exe is a common trick used to hide malware.

Did you encounter this link on a or receive it in a message ? Providing the context can help identify the exact type of threat.