Check the file size. A clean 1.0.0 APK should be approximately 38–42 MB (the data download inside the app will add another ~80 MB).
Version 1.0.0 began with a cinematic cutscene that felt more like a sci-fi movie than a mobile game. The flock was guarding their eggs, as usual, when a giant mechanical claw descended from the sky. In a flash, the eggs—and the birds—were sucked into a wormhole. Angry Birds Space 1.0.0 Apk