Great question — answering as the UphillTech team:
Let's summarize all the comments. First, and most important, from Peter M: This is obviously a fake boarding pass. It is possible that the person who sent you this is trying to groom you as a part of a romance scam. The specific things that make it fake: That is a boarding pass on the cardboard stock they use (or used to use) at the airport. Unless the person is flying within a few hours, they would not have it. It is not a ticket, or proof of purchase. It is literally what you use to board the plane. These days most people print those at home or have images on their phones. Someone who flies United more often can confirm, but I don't think this cardboard includes the STAPLE HERE...
Full answer by Kate Gregory: https://travel.stackexchange.com/a/203575 (CC BY-SA 4.0).
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