Acrobat Professional 7.0 installer

I don't know if that version 7 required activation, but if it did it won't activate

Acrobat 9 came with CS5, and the activation servers for CS4 and earlier are gone

The CS2-CS3-CS4 activation servers have been removed from service
-https://helpx.adobe.com/creative-suite.html?promoid=19SCDRQK
-So even if you have a disc or saved download, CS2-CS3-CS4 are completely dead

acrobat 9 is the oldest version available.