To distribute Adobe Acrobat Reader 9.4.0 via SCCM, you need to first download the exe file, package it up in SCCM and then run the below command as your program:
AdbeRdr940_en_US.exe /sAll /rs /l /msi "/qb-! /norestart ALLUSERS=1 EULA_ACCEPT=YES SUPPRESS_APP_LAUNCH=YES"
This is for version 9.4.0 but should work on all versions of Adobe Reader.
But if you are using Adobe Reader X or XI now, there are more up to date versions of doing this using MSI files, all of which I’ve put guides together in more recent posts on this blog.