$6 SciFi Cube Object No 18288 Low Poly Shape Texture 3D model by 3dmodelbase. Available on CGTrader. Check it out on CGHub.
STL (Stereolithography, filesize: 3.26 MB), OBJ (OBJ, filesize: 6.8 MB), 3DS (3D Studio, filesize: 1.65 MB), C4D (Cinema 4D, filesize: 2.69 MB), FBX (Autodesk FBX, filesize: 10.9 MB)