Attach (recommended) or Link to PDF file here:
[Hong Kong Aircraft Engineering Company Limited_1511417616.1 2.pdf](https://github.com/mozilla/pdf.js/files/1539395/Hong.Kong.Aircraft.Engineering.Company.Limited_1511417616.1.2.pdf)


Configuration:
- Web browser and its version: Chrome: 63 
- Operating system and its version: windows and macOs
- PDF.js version: 2.0.185
- Is a browser extension: No

Steps to reproduce the problem:
1. Upload the above PDF and search for "article 1"
2. PDF.js showing only **2** match But actually **4** times available.   

What is the expected behavior? (add screenshot)

![screen shot 2017-12-07 at 7](https://user-images.githubusercontent.com/6101789/33720106-ed404576-db88-11e7-9c19-cf6aea74e9f3.png)



What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

path peratr have been encuntered (fxe bug1443140.pdf).
            f (
              fn >= OPS.mveT &&
              fn <= OPS.endPath &&  Path peratr
              th._numInvaldPathOPS >
                EvaluatrPreprcer.MAX_INVALID_PATH_OPS
            ) {
              thrw new FrmatErrr(`Invald ${partlMg}`);
            }
             If we receve t few argument, t' nt pble t execute
             the cmmand, hence we kp the cmmand.
            warn(`Skppng ${partlMg}`);
            f (arg !== null) {
              arg.length = 0;
            }
            cntnue;
          }
        } ele f (argLength > numArg) {
          nf(
            `Cmmand ${cmd}: expected [0, ${numArg}] arg, ` 
              `but receved ${argLength} arg.`
          );
        }
         TODO fgure ut hw t type-check vararg functn
        th.preprceCmmand(fn, arg);
        peratn.fn = fn;
        peratn.arg = arg;
        return true;
      }
      f (bj === EOF) {