I'm sorry if it's a duplicate, I found lots of issues with gradients but none of the open ones looks similar.
It's apparently the PDF code `/Matrix [440 0 0 -200 20 220]` (line 44 in both files) that causes the problem.

**Configuration:**
- Web browser and its version: Chrome 54
- Operating system and its version: Windows 10
- PDF.js version: 1.6.343

**Steps to reproduce the problem:**
Open attached files:
[radial.pdf](https://github.com/mozilla/pdf.js/files/610302/radial.pdf)
[linear.pdf](https://github.com/mozilla/pdf.js/files/610300/linear.pdf)

**What is the expected behavior?** (Adobe Reader 11)
![image](https://cloud.githubusercontent.com/assets/17966696/20583379/fa80d780-b1f1-11e6-85d2-62dd6970a08c.png)

**What went wrong?** (mozilla.github.io/pdf.js/web/viewer.html)
Gradients aren't correctly transformed
![image](https://cloud.githubusercontent.com/assets/17966696/20583361/cf5bb8a4-b1f1-11e6-9479-9cc606b41187.png)

(-4 * coords[ps[12]][1] -
          coords[ps[3]][1] +
          6 * (coords[ps[8]][1] + coords[ps[13]][1]) -
          2 * (coords[ps[0]][1] + coords[ps[15]][1]) +
          3 * (coords[ps[11]][1] + coords[ps[1]][1])) /
          9,
      ]);
      ps[10] = coords.length;
      coords.push([
        (-4 * coords[ps[15]][0] -
          coords[ps[0]][0] +
          6 * (coords[ps[11]][0] + coords[ps[14]][0]) -
          2 * (coords[ps[12]][0] + coords[ps[3]][0]) +
          3 * (coords[ps[2]][0] + coords[ps[8]][0])) /
          9,
        (-4 * coords[ps[15]][1] -
          coords[ps[0]][1] +
          6 * (coords[ps[11]][1] + coords[ps[14]][1]) -
          2 * (coords[ps[12]][1] + coords[ps[3]][1]) +
          3 * (coords[ps[2]][1] + coords[ps[8]][1])) /
          9,
      ]);
      mesh.figures.push({
        type: "patch",
        coords: new Int32Array(ps), 
        colors: new Int32Array(cs),
      });
    }
  }
  function decodeType7Shading(mesh, reader) {