The photo below is of an email that was sent as a "spear phishing" attack -- where the con artist gets the gullible target (the mark) to click a link that downloads malware onto your computer. This is a pretty sophisticated version. It was good enough that there was a chance that it was just a clueless sender who didn't realize how suspicious his email looked -- so I sent him the response asking for further information. No response to my query, so I feel pretty safe in asserting that the original email is an attempt to hook me with malware.
Be careful out there folks. If you are not expecting an attachment, don't click on it until you confirm that it's legit, and be very cautious about declaring anything legit from someone sending you something out of the blue.
Remember, money never calls you on the phone, and it never magically appears in your email inbox either.