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 cs = ColorSpace.parse({
      cs: dict.getRaw("ColorSpace") || dict.getRaw("CS"),
      xref,
      resources,
      pdfFunctionFactory,
      localColorSpaceCache,
    });
    this.cs = cs;
    this.background = dict.has("Background")
      ? cs.getRgb(dict.get("Background"), 0)
      : null;
    const fnObj = dict.getRaw("Function");
    const fn = fnObj ? pdfFunctionFactory.createFromArray(fnObj) : null;
    this.coords = [];
    this.colors = [];
    this.figures = [];
    const decodeContext = {
      bitsPerCoordinate: dict.get("BitsPerCoordinate"),
      bitsPerComponent: dict.get("BitsPerComponent"),
      bitsPerFlag: dict.get("BitsPerFlag"),
      decode: dict.getArray("Decode"),
      colorFn: fn,
      colorSpace: cs,
      numComps: fn ? 1 : cs.numComps,
    };
    const reader = new MeshStreamReader(stream, decodeContext);
    let patchMesh = false;
    switch (this.shadingType) {
      case ShadingType.FREE_FORM_MESH:
        decodeType4Shading(this, reader);