Don't you think it kind of coincidental that someone else has received the same offer in the recent past? I guess if they start asking you for money that's one sure sign something isn't right. I do not know if this job in particular is a scam (3 posts besides yours makes me wonder), but here's a link to some information at the FTC about job scams. It might help protect you. https://www.consumer.ftc.gov/articles/0243-job-scams
Good Luck!