Avoid third-party repacks—they often hide malware, have broken bootloaders, and could expose your data. If a link promises a direct, pre-packaged 4.7 GB ISO of 10.7.5 with “crack” or “pre-activated” terms, it’s almost certainly dangerous.
You can access the Mac OS X Lion Installer - Apple Support to find the official download link for the installer. mac os x lion 107 5 iso download repack link