The file appears to be a modified (modded) version of the Puffin TV Browser, likely intended to bypass subscription requirements or unlock premium features like unlimited "cloud-based" browsing on Android TV devices [1]. Overview of Puffin TV Browser

: Open a file commander app on your TV, locate the .apk file, and select Install [8]. Recommended Alternatives

: Use an app like Send Files to TV to move the APK from your phone/PC to your TV, or use a USB drive [7].