Re: Any books that have....
I can think of loads of films with that sort of plot (Evil Dead, Blair Witch, Wrong Turn etc).
There are loads of books set in the woods but all the ones I can think of have ghosts or aliens, not demons and zombies.
The Way Through the Woods by Ramsey Campbell has a forest and a sort of demon. It's good but I don't know if it's exactly what you're looking for.