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)

const [x1, y1, r1, x2, y2, r2] = this.coordsArr;
      const distance = Math.hypot(x1 - x2, y1 - y2);
      if (r1 <= r2 + distance && r2 <= r1 + distance) {
        warn("Unsupported radial gradient.");
      }
    }
    this.extendStart = extendStart;
    this.extendEnd = extendEnd;
    const fnObj = dict.getRaw("Function");
    const fn = pdfFunctionFactory.createFromArray(fnObj);
    
    
    
    const NUMBER_OF_SAMPLES = 10;
    const step = (t1 - t0) / NUMBER_OF_SAMPLES;
    const colorStops = (this.colorStops = []);
    
    if (t0 >= t1 || step <= 0) {
      
      
      info("Bad shading domain.");
      return;
    }
    const color = new Float32Array(cs.numComps),
      ratio = new Float32Array(1);
    let rgbColor;
    for (let i = 0; i <= NUMBER_OF_SAMPLES; i++) {
      ratio[0] = t0 + i * step;