The string represents a relic of the mid-2010s "repack wars," where groups competed to see who could provide the smallest download for data-capped users. While effective for saving bandwidth at the time, using such a file today is generally considered high-risk compared to modern digital storefronts or more contemporary, verified repacking sources.
CorePack was a well-known release group that gained popularity for providing compressed versions of heavy AAA titles. Below is a detailed breakdown of what this specific repack entails, its features, and important context regarding its use. callofdutyadvancedwarfarerepackbycorepack
While I can’t provide direct links or endorse piracy, here’s an interesting article-style breakdown of what this particular release represents in the scene: The string represents a relic of the mid-2010s