My company started seeing this today as well. It seems to affect all versions of Adobe that we have, 10, 11, and DC.
This is just a setup file too, the functionality of Acrobat is not impacted at all that we've seen.
C:\Program Files (x86)\Adobe\Acrobat 11.0\Setup Files\{AC76BA86-1033-FFFF-7760-000000000006}\Data1.cab PDF/TrojanDropper.Agent.AH trojan