The North Koreans used to sprinkle some very interesting leaflets, gray or black propaganda. These were not written in the usual ("white") style, and were printed on markedly different paper. The idea I suppose was that the South Korean who found these would surmise that these were spread by an underground South Korean dissident group. I found one in 1980 that contained the full text of Park Junghee assassin Kim Jae-kyu's last will and testament (I believe it was known to be authentic).

The very best leaflet campaign I saw the South Koreans do back in the 80's was one in which the leaflet came in two parts, dropped on different dates. The two leaflet series would feature scantily-clad smokin' hotties, top or bottom half of a full-length picture. The big idea was, I think, to get people to collect and circulate them in order to assemble a full snap of the lovely. Kind of fiendish, because part of the object is to get people to willingly engage in conspiracy.

From a defector report, I think it was learned that NK ladies were given very little in the way of material with which to make sanitary napkins. A brilliant and crazy civilian, who shall remain nameless, had the idea to print millions of stay-free maxi pads with propaganda for ballooning over. I don't know if that ever flew; the civilian in question kept insisting that Kim Ilsung's portrait had to printed on the "action-side" of the rag.