The classic_zombie_face.zip file you have requested: Call of Pripyat / Skins / Classic Bloody Zombie Face Skin - 1000kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Call of Pripyat and upload any files you want to share or are missing. This is the only information we could locate:
This mod adds in a large cut on the side of a Zombies face. The author also added a lot of detail to the eyes nose and mouth. A lot of shadowing and radiation damage. Enjoy.