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)

*
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import {
  FONT_IDENTITY_MATRIX,
  IDENTITY_MATRIX,
  ImageKind,
  info,
  IsLittleEndianCached,
  isNum,
  OPS,
  shadow,
  TextRenderingMode,
  unreachable,
  Util,
  warn,
} from "../shared/util.js";
import { getShadingPatternFromIR, TilingPattern } from "./pattern_helper.js";
const MIN_FONT_SIZE = 16;
const MAX_FONT_SIZE = 100;
const MAX_GROUP_SIZE = 4096;
const COMPILE_TYPE3_GLYPHS = true;
const MAX_SIZE_TO_COMPILE = 1000;
const FULL_CHUNK_HEIGHT = 16;
const LINEWIDTH_SCALE_FACTOR = 1.000001;
function addContextCurrentTransform(ctx) {