An empty or blank email with the subject of Message from local network scanner pretending to come from jpaoscanner at your own email domain with a malicious word docattachment is another one from the current bot runs which try to download various Trojans and password stealers especially banking Trojans like Dridex or Dyreza and ransomware like cryptolocker or Teslacrypt.
The attachment to these are named Scann16011310150.doc Evidently some attachments have a letter F after the doc which effectively makes them useless because windows doesn’t know what to do with them and asks you. They will open in Word, if you tell them to, and do contain a malicious macro that will infect you
We have started seeing these messages and searching the web reveals we are not alone.
See these links: myonlinesecurity and Dynamoo, amongst others