If the FTP link is down or difficult to navigate, you can search for the specific filename via a search engine.
Because support ended in 2013:
For offline deployment, download the latest offline installer from Adobe’s FTP or distribution center, not third-party sites.
An offline installer is a "standalone" file that contains all necessary data to install the software without an active internet connection. This is particularly useful for:
Since this is an outdated version, you must configure it to ensure it doesn't interfere with your system security.
: Acrobat Reader 9 is one of the last versions to support older operating systems like Windows XP and Windows Vista .
Using Reader 9 online or with untrusted PDFs is equivalent to opening a security hole.
Allowed multiple file types to be bundled into a single PDF with a unified interface.