: Adobe ended all support and security patches for Acrobat X on November 15, 2015 . This means even a "clean" version is highly vulnerable to modern exploits found in PDF files.
: A way to assemble different file types (Word, Excel, etc.) into a single, polished PDF "container".
Known for being extremely fast and feature-rich without the heavy footprint of Adobe products. Conclusion
It runs smoothly on older hardware where modern Adobe apps might lag. The Major Risks of "Portable" ISOs
Unofficial "Portable" versions are a common delivery method for trojans, keyloggers, and miners. Since the file is modified by an unknown third party, you cannot verify its integrity.
The article below is for . It explains what such a file claims to be, why people seek it, and the legitimate alternatives. I do not endorse or provide links to pirated software.
It includes Adobe LiveCycle Designer for building complex PDF forms. The Risks of Using Portable ISOs