North Korea's "secret cyber-weapon": brand new Red Star OS (Linux-based)
rt.com
rt.com
Even Steve Ballmer's worldview is right once in a while.
Then again, I'd imagine it would be tough to put legal pressure on the DPRK when the combined diplomatic efforts of the West can't get them to budge....
I doubt DPRK cares about the GPL at all. I imagine the app suite that's "similar to OpenOffice" is OpenOffice, perhaps slightly reworked. A full OpenOffice-like suite would take a lot of time and people to build from scratch, for no real benefit.