There’s some spam pretending to be from Delta Airlines. It tries to trick readers into opening the attached file, making readers believe that the ticket has been paid in full and that it’s ready to be used by the reader. The attachment is a trojan that gives people complete access to the PC and tries to download more malware every time you reboot.
Below is an extract from the fake email:
Thanks for the purchase!
You will find attached to this letter PASSENGER ITINERARY RECEIPT of your electronic ticket.
It verifies that you paid the ticket in full and confirms your right for air travel and luggage transportation by the indicated flight Delta Air Lines.
…and on and on…
If you see this email delete it, don’t open the attachment.