Same here, it's supposedly Android, but the file says Ios (iOS I think)
Yes, at first i tried to use my phones default rar. extractor, it simply said "Couldn't Extract."
So i installed a rar. app, tried from there, and it worked... but for the life of me i cannot find the executable, this may ABSOLUTLY be on me, but still. I'll download the same file to my pc and see if i find it there.