Graphics3D[{
      Line[{{0, 0, 0}, {1, 0, 0}, {1, 1, 0}, {0, 1, 0}, {0, 0, 0}}],
      Line[{{0, 0, 1}, {1, 0, 1}, {1, 1, 1}, {0, 1, 1}, {0, 0, 1}}],
      Line[{{0, 0, 0}, {0, 0, 1}}],
      Line[{{1, 0, 0}, {1, 0, 1}}],
      Line[{{0, 1, 0}, {0, 1, 1}}],
      Line[{{1, 1, 0}, {1, 1, 1}}],
      Line[{{0, 0, 1}, {3, 3, 4}}],
      Line[{{0, 1, 1}, {3, 4, 4}}],
      Line[{{0, 1, 0}, {3, 4, 3}}],
      Line[{{1, 1, 0}, {4, 4, 3}}],
      Line[{{1, 1, 1}, {4, 4, 4}}],
      Line[{{1, 0, 0}, {4, 3, 3}}],
      Line[{{1, 0, 1}, {4, 3, 4}}],
      Line[{{3, 4, 3}, {3, 4, 4}, {4, 4, 4}, {4, 4, 3}, {3, 4, 3}}],
      Line[{{4, 3, 3}, {4, 3, 4}, {4, 4, 4}, {4, 4, 3}, {4, 3, 3}}],
      Line[{{3, 3, 4}, {3, 4, 4}, {4, 4, 4}, {4, 3, 4}, {3, 3, 4}}]
      },
    Boxed -> False, Shading -> False, PolygonIntersections -> True, 
BoxRatios->{1,1,1},
    Background -> RGBColor[1, 1, 0.7]]