There has been a recent wave of phishing attacks that try to trick you into opening "secure documents". If you receive an email that looks like it is a DocuSign, EchoSign or Secure Adobe PDF notification with an important document attached that needs to be looked at.
My company has recently experienced this, but we caught it in time before anything major occurred. I really urge you to be careful what you are clicking on and make sure it is legit before you click.
The bad guys try to trick you into opening and clicking the attachments, and "enable macros" or "enable editing" but when you do, your workstation gets infected with malware or ransomware.
In some instances, the attachments will not contain viruses, allowing it to bypass the anti-virus software. However, the attachments will contain dangerous links that will open in your web browser and attempt to download the malicious programs.
If you receive this type of email, (which you did not ask for) and/or it's from someone you do not know, be very cautious. My recommendation is to just delete the email. If it looks like it comes from someone you do know, pick up the phone and call the person to verify, but use a number you know and not a phone number from the suspicious email itself.
The link below is to a blog called KnowBe4.com. It describes in great detail what to lookout.