North American Consumer Promotion Draw Northern Trust Weird amount "won" Chicago Illinois

Who tells someone they won the weird sum of $8,221.50? Out of the blue my 96 year old father received a letter from Northern Trust with a $822.15 check written on PNC Bank in Philadelphia, PA. No account holder was shown on the check but otherwise it looked legit.

The letter, mailed from Canada, listed a Chicago, Illinois address and stated "Per your State regulations, a tax amount of $500.00 will be required before your lump sum winning can be sent to you." Really??? Only $500?? In Massachusetts? What about the Federal government's cut? No W9 included with the letter and no information about where the amount was to be sent and to whom it was  to be made out.

The letter instructed him to call a David Moore. Instead I called PNC Bank and they now have a copy of the letter, check and the envelope for their records. So glad my father showed me this before he did anything, especially sending money.