Well, a purely heuristic evaluation: this appears to be written in Word rather than LaTeX, it seems to be this person's first publication, it seems they're not

Well, a purely heuristic evaluation: this appears to be written in Word rather than LaTeX, it seems to be this person's first publication, it seems they're not affiliated with any institution, and it reads like an undergrad's homework rather than a paper. So I'm pretty skeptical.