Silent_Hill_TP_64x_1.4.2.zip is a release file of the Minecraft resource pack [Official] Silent Hill Resource Pack 128x 1.6.4. It was published on November 27, 2012 and is 25 MB in size. For the full description, screenshots and every other version, visit the [Official] Silent Hill Resource Pack 128x 1.6.4 resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.