The file is highly likely to be a dangerous file or malware, rather than a legitimate game update.
If you want to play the game safely, consider these official versions:
: Play the remastered version in Angry Birds Reloaded .
: Rovio Entertainment officially discontinued the game, and while it has reappeared as part of the Apple Arcade exclusive Angry Birds Reloaded , standalone updates for the legacy version on PC or other platforms are no longer provided by the developer. Safe Alternatives to Play Angry Birds Space