One of the most insightful "reviews" or critiques of this specific ROM implementation comes from technical experts in the fan-game community:

This file allows you to play the definitive version of the 16-bit Sonic trilogy. Features unlocked in this version include:

False positive. Some ROM patchers bundle adware. Download only from trusted sites (archive.org, Sonic Retro, or your own dump). The .bin itself contains no executable code for PC.

He shrugged and pressed Start.

The most common legal source for this file was the bundle on Steam.