Adobe offers two types of offline installers:
The is a complete installation package that includes all the necessary files to install the software without an active internet connection. Unlike the standard "online" or "stub" installer (usually ~2 MB) which downloads components during the process, the offline setup (typically 600–700 MB) is ideal for bulk deployments, low-bandwidth environments, or securing systems that cannot connect to the web. Direct Official Download Links
Even with the offline installer, the first launch of Adobe Acrobat Reader DC requires a brief internet connection to:
Rohan quickly navigated to the Adobe website and clicked on the "Download" button for Adobe Reader. However, instead of downloading the online installer, he looked for the offline setup option. After a few clicks, he found the link to download the offline setup, and his browser started downloading the 150 MB file.