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)

let bufferLength = this.bufferLength;
      if (n === 32) {
        if (bufferLength === 0) {
          return (
            ((this.stream.getByte() << 24) |
              (this.stream.getByte() << 16) |
              (this.stream.getByte() << 8) |
              this.stream.getByte()) >>>
            0
          );
        }
        buffer =
          (buffer << 24) |
          (this.stream.getByte() << 16) |
          (this.stream.getByte() << 8) |
          this.stream.getByte();
        const nextByte = this.stream.getByte();
        this.buffer = nextByte & ((1 << bufferLength) - 1);
        return (
          ((buffer << (8 - bufferLength)) |
            ((nextByte & 0xff) >> bufferLength)) >>>
          0
        );
      }
      if (n === 8 && bufferLength === 0) {
        return this.stream.getByte();
      }
      while (bufferLength < n) {
        buffer = (buffer << 8) | this.stream.getByte();
        bufferLength += 8;