This papercraft is the UT-60D (aka the U-wing), a transport/gunship model manufactured by Incom Corporation and used by the Alliance to Restore the Republic during the Galactic Civil War, from the Star Wars universe, the paper model is created by Papier Schnitzel.
"This model from the new ship in the Rogue One movie comes in two sizes complete with building instructions. One in the usual size for 28-30mm figures and a smaller version for 15mm figures."
Used to drop troops into battle, and provide cover fire for them, U-wings featured at least one side door which could also be used as a viewport for a mounted blaster cannon. The wings of the U-wing were retractable and could be positioned forward-facing or backward-facing depending on the situation. An Alliance U-wing participated in the battle of Scarif, in which it dropped reinforcements for the Rogue One squad fighting on the planet's surface and then gave close support from the air, aiding them in carrying out the theft of the Death Star plans. The U-wing also saw action during the Battle of Jakku as a part of the New Republic Starfleet. [Source: wikia]
You can download this paper model template here: Star Wars - UT-60D (U-wing) Transport/Gunship Free Papercraft Download