It doesn't sound like Brady to me. There are a couple places where it is quite similar to real Brady, but for too much of it the pitch and the accent are too far off.
I bet it's some prankster pretending to be Brady pretending to be someone else.
Too bad he didn't introduce himself as Matt Eedrab.
Yeah, jeez, I heard enough about this stupid thing where they got me to play the clip (mission accomplished, I guess), and it doesn't sound anything like the guy. Man.