It doesn't scatter files across your Program Files or leave traces in the Windows Registry.
However, I can provide a of what this type of software claims to be, the risks associated with it, and the legal context—without endorsing or instructing on its use. Adobe Acrobat Pro DC 2019.010.20098 Portable
This intelligent feature highlights all differences between two versions of a PDF document, including text edits and image changes. It’s essential for legal professionals and editors. It doesn't scatter files across your Program Files
To get the most out of this portable build, keep these tips in mind: the risks associated with it
The file size should be between 450 MB and 750 MB. If you see a 150 MB "portable Acrobat," it is either a fake, a virus, or a stripped-down viewer (not Pro).