An increasing number of attacks take advantage of the capabilities of modern document formats to get past baseline anti-malware solutions. Such evasive measures involve initiating malicious actions from document files to infect endpoints by using macros, PowerShell and other scripts. A single click can inadvertently infect your systems.
Article Link: http://blog.minerva-labs.com/prevented-by-minerva-labs-new-evasive-malware-technique-exploits-microsoft-dynamic-exchange