Hello, we are sending ZIP attachment with PDF files to our clients. Some of them get warning messages like below with incoming emails blocked:
---------------------------------------------------------------------------
Sending server IP address: 209.85.215.XXX
Subject: Your documents attached - online order 129426
Date: Tue, 24 Jul 2018 22:45:53 -0700 (PDT) Message ID: <5b580e91.1c69fb81.339b5.3a5f@mx.google.com>
Virus/Unauthorized code: >>> Possible MalWare 'Exploit/Link-5c05' found in '2074_8X_AZ_PA2__Company=20Minutes.pdf::URI-70e75f93c16be498e70e798c232c4207'. Heuristics score: 200
Email quarantined on mail server server-10.tower-426.messagelabs.com (Pen ID 20676_1532497563)
Please contact your IT Helpdesk or System Administrator for further assistance.
This inbound email has been scanned by MessageLabs
This outbound email has been scanned by MessageLabs
---------------------------------------------------------------------------
We have scanned the attachment with our anti-virus tool, no issues found. By searching through the email body and attachments, they don't contain the following text or keywords:
2074_8X_AZ_PA2__Company=20Minutes.pdf::URI-70e75f93c16be498e70e798c232c4207
Please let us know how to solve this issue.
The PDF files are confidential, but if required, we can send a sample to your appointed email address.
Thank you.