Well, everyone has pretty much answered this question . . . yep, illegal. Actually copyright registration doesn't really matter. There is an element of unfair business practices involved. Putting up a site with that literature scanned would result in a fast suit.
All that being said, and not advocating it any way, most businesses don't care if you make a copy of something and give it to a friend (or two, or three . . .). That won't result in a suit (the cost of the suit just isn't worth the money they can recover in damages, and it makes them look petty).
-- bg (Esq., btw)