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)

}
      bufferLength -= n;
      this.bufferLength = bufferLength;
      this.buffer = buffer & ((1 << bufferLength) - 1);
      return buffer >> bufferLength;
    },
    align: function MeshStreamReader_align() {
      this.buffer = 0;
      this.bufferLength = 0;
    },
    readFlag: function MeshStreamReader_readFlag() {
      return this.readBits(this.context.bitsPerFlag);
    },
    readCoordinate: function MeshStreamReader_readCoordinate() {
      const bitsPerCoordinate = this.context.bitsPerCoordinate;
      const xi = this.readBits(bitsPerCoordinate);
      const yi = this.readBits(bitsPerCoordinate);
      const decode = this.context.decode;
      const scale =
        bitsPerCoordinate < 32
          ? 1 / ((1 << bitsPerCoordinate) - 1)
          : 2.3283064365386963e-10; 
      return [
        xi * scale * (decode[1] - decode[0]) + decode[0],
        yi * scale * (decode[3] - decode[2]) + decode[2],
      ];
    },
    readComponents: function MeshStreamReader_readComponents() {
      const numComps = this.context.numComps;
      const bitsPerComponent = this.context.bitsPerComponent;