This papercraft is a Klingon D-7 Class Battle Cruiser, a 23rd century warship originally designed and used by the Klingon Imperial Fleet, before being shared with the Romulan military during the late-2260s, based on American sci-fi entertainment franchise Star Trek, the paper model is created by [unknown]. There is also a Klingon Tahng D-7 K'tinga Class Battle Cruiser Paper Model on the site.
The D7 class Klingon battle cruiser served as the backbone of the fleet for several years during the 23rd century. Among the mission profiles designated for this class was that of scout ship.
By 2267, they were prominently featured in the Klingon Imperial Fleet, where they posed a serious threat to the security of the Federation and Starfleet. [Source: wikia]
You can download this papercraft template here: Star Trek - Klingon D-7 Class Battle Cruiser Free Paper Model Download [DropBox] [Gavitex] [pCloud]