Flakey spam email. How to filter?

[Mark London]

I'm getting a lot of flakey spam messages,  that don't trigger any 
significant spamassassin rules, even though it obviously looks really bogus.

Here's an example.   Any suggestions?
https://pastebin.com/bZUt0ThS

These spams are being sent to my gmail account, and then forwarded to my 
work address  I tried stripping off all the forwarding headers, but it 
doesn't trigger any RBLs

Thanks for any help.

- Mark