It's a scam. Typically the way this will work is that the scammers will make a fraudulent money transfer into your friend's account. Your friend will convert the funds into Bitcoin and send it off to the scammers. After a few days or weeks, the bank will figure out that the original transfer was fraudulent and come after your friend's bank account to be reimbursed. There's no way to reverse the Bitcoin transfer, so your friend will be held responsible for the missing money.

It's a scam. It's called a money mule. Typically the way this will work is that the scammers will make a fraudulent money transfer into your friend's account. Your friend will convert the funds into Bitcoin and send it off to the scammers. After a few days or weeks, the bank will figure out that the original transfer was fraudulent and come after your friend's bank account to be reimbursed. There's no way to reverse the Bitcoin transfer, so your friend will be held responsible for the missing money.