I can only label this a Russian referrer bot because it uses predominantly Russian referrers, used for referrer spam. In fact I have no evidence of its origin. The list of 46 unique requesting IPs are from around the world, seemingly random. While it is easy to ban these 43, there is no way to find the originator of this bot.
Referrer spam is unique in that the originating IP does not care about returned data. All the IP request wishes to do is insert their referrer info into the request. This request goes back to and therefore affects and pollutes your Google Analytics. The requesting IPs, not wanting any information in return, could be from anywhere and could well be faked.