You can find official Adobe patch installers archived on web.archive.org . Search for: https://web.archive.org/web/20130501000000/http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Windows

This is the most dangerous part of the process. Because Adobe has removed all Acrobat 9 patches from its official ftp.adobe.com and helpx.adobe.com sites, you must rely on third-party archives.

To mitigate these risks, Adobe has released patches and updates for Acrobat 9 Pro. These patches fix specific vulnerabilities and security weaknesses, ensuring that the software is secure and reliable. By installing the patch for Adobe Acrobat 9 Pro, users can protect themselves against known security threats and prevent potential attacks.