I have done decently well applying Graham's principles in my longer term stuff, and a lot of the stuff I hold could be considered distressed. 1 thing to be aware of is the difference between buying distressed 'price' vs 'value'. Without writing a lengthy explanation of Graham's ideas and net nets, and Buffett's evolution of that, a simple example will suffice.
Something like TEF is a value play, something like DHT is a price play. The former although being beaten down and having exposure to a weak region in the world, still throws off massive FCF and has a growing segment of its top line from the expanding 3rd world. The latter which is an absolute dog with fleas faces crushing debt and minimal revenue.
Just because something is in the 95th percentile of losers or worse doesn't mean its unworthy to buy. Do understand if you are buying because price has fallen a lot or if intrinsic value has actually changed.