Email Scam

This morning scam emails were sent from the [email protected] email account. If you tried to open the pdf or clicked on something in the email then it is likely that your email has been compromised. 
Considerations: change your password, consider enabling Multi-Factor Authentication, and make sure no forwarding rules have been setup in Gmail for incoming/outgoing messages, as well as "Reply to" changes

In Gmail - go into settings, then all settings and look for [email protected] and remove that and leave the field blank.