iOS I know this is possible, but is it sellable?

There must be a way to simply open a pdf in an app. Thats all. Hit the button for the app - pdf opens. Let the built in pdf code handle paging back and forth in the book. I have been going rounds trying to figure out how to code a simple comic book into an app. Is it not possible to wrap the pdf into an app? Would the store allow this to be sold? I know graphic novels are sold, but is the method of presenting called into question?
Thanks