If your serpentine belt is covered in oil then I'd steer towards timing cover gasket. But u can lose oil from a lot of things. Make sure the oil filter is tight and drain plug (assuming you checked already). Oil pan gasket, valve cover gasket, if you don't have any codes then most likely not burning. O2 bank 1 sensor would come on (P0172 code) start there

I tried to access your picture. Google docs said I needed permission. Maybe try uploading that pic to one of the free image hosting sites and post the link so we can access it.

That said, on some of those 2.7 Hundais the oil pressure sender is under the intake manifold and when it leaks the oil runs down and looks like it's  leaking  from the bottom of the engine.