Found Metamask private key without 4 last characters...

Hello,

While cleaning up my files, I found a private key for a Metamask account with 4 fewer characters (it's 60 characters long).

I'd like to know if there's a way to recover the last 4 characters, by bruteforcing for example.

I know it's the last 4 that are missing because I often do this...

Thanks for your help