CTR is described in the leaks as a "bunch of nerd virgins in a basement" who troll the internet to counter grassroots anti-Hillary efforts, trying to have anti-Hillary users and information censored. They also seek to introduce memes to either mock or discredit or trigger (haha) Trump supporters.
The "Truthiness" of this PDF is that it is in line with what they themselves declare to be their mission.
Thank you. From what you wrote, I doubt that CTR is sophisticated enough to keep their documents secured. This could very well be a copy of a CTR produced document.