This is the last Reader from Adobe.com for PPC.
I don't have the .dmg file. You'll have to expand it with StuffIt or The Unarchiver, then put it in your Applications folder.
This version works on Mac OS X 10.4.11 and Mac OS X 10.5.8.
CompatibilityPPC OS X
Comments
Skim is SO MUCH BETTER (https://sourceforge.net/projects/skim-app/files/Skim/Skim-1.2.7/) !!! The Only PDF reader you need.
And for actually editing PDFs, Libre Office is the best thing for PPC https://macintoshgarden.org/apps/libre-office-4062-ppc (Reader Pro doesn't do anything useful other than let you cut-down file sizes).