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)

operatorList,
      executionStartIdx,
      continueCallback,
      stepper
    ) {
      const argsArray = operatorList.argsArray;
      const fnArray = operatorList.fnArray;
      let i = executionStartIdx || 0;
      const argsArrayLen = argsArray.length;
      
      if (argsArrayLen === i) {
        return i;
      }
      const chunkOperations =
        argsArrayLen - i > EXECUTION_STEPS &&
        typeof continueCallback === "function";
      const endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;
      let steps = 0;
      const commonObjs = this.commonObjs;
      const objs = this.objs;
      let fnId;
      while (true) {
        if (stepper !== undefined && i === stepper.nextBreakPoint) {
          stepper.breakIt(i, continueCallback);
          return i;
        }
        fnId = fnArray[i];
        if (fnId !== OPS.dependency) {
          this[fnId].apply(this, argsArray[i]);