Varisu is owned by Sri Venkateswara Creations and distributed by Amazon Prime Video (in most regions). Downloading from an unlisted directory violates copyright law. While laws vary by country (DMCA in the US, Copyright Act in India), ISPs can issue warnings, throttle your speed, or terminate your service.
For viewers looking for high-quality, legal access to the movie, Varisu is widely available across major global streaming platforms: Varisu - Prime Video index of varisu movie