Idk. Ive been picking at it for a long time across my desktop surround sound speakers, my monitor's speakers, my phone, my headphones. I tried isolating the tracks, high passing, low passing, any filters imaginable, high and low volume, bass boosting, bass reduction, anything I could think of. I heard the same word over all of them granted the filtering didn't muffle it out into nothing.
I can find no proof that the audio was tampered with.