Filtering spam invitation emails
Definitively identifying spam is next-to-impossible because:


Spammers can change their email addresses with trivial effort.
Spammers work hard to mimic legitimate content.
Any spam detection method that becomes popular will be analysed and actively subverted by spammers.


All of the above are true of predatory journal spam. So I don't think there is anything like the resource you suggested (I did do a bit of searching).