Also wXw.frimm.com
Also mail.frimm.com
The same applies both as it appears the (whole) domain frimm.com would be alerted on.
Use the link I gave to report possible false positive.
You haven't modified the links that you posted as the are still active (can be clicked) apart from the mail.frimm.com which can't be accidentally clicked resulting in an Avast alert.
The problem is still present if you have Avast extensions installed on your browser
The avast extension wouldn't stop an alert from the Avast Program, that isn't what it is designed for.