PDF Blocking with special Mail Adresses

There is a problem with the detection of email adresses in pdf files.

If you save out of Word, Excel or Powerpoint an .pdf file with the content of “info@k.com” as hyperlink, Avast Free or Business will detect it as PDF:UrlMal-inf [Trj] which is not correct. Mails or files with pdfs containing k.com recognized all as malware. We have customers with another email adress beginning with k*.com I dont want to write here which cannot send or open any pdf containing their email adresses.

Can you take a look into?