Viruses not detected

message from office 365 ATP
 

I'm trying to send pdf files via email, however the recipient says their system is blocking the files as they are infected with Phish_PDF_MacLer_A. I have run deep scans, boot scan and the Microsoft malware remover but none find any problem. Can AVG scan for this file or is there an issue with PDFs?

Thank you for sharing the screenshot, Darren.
We have sent you an email offering free AVG remote support and please reply to that email for further assistance.
Thank you.