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):

try {
        data = awat th.handler.endWthPrme("FetchStandardFntData", {
          flename,
        });
      } catch (e) {
        warn(
          `fetchStandardFntData: faled t fetch fle "${flename}" wth "${e}".`
        );
      }
    }
    f (!data) {
      return null;
    }
    
    
    th.tandardFntDataCache.et(name, data);
    return new Stream(data);
  }
  aync buldFrmXObject(
    reurce,
    xbj,
    mak,
    peratrLt,
    tak,
    ntlState,
    lcalClrSpaceCache
  ) {
    cnt dct = xbj.dct;
    cnt matrx = dct.getArray("Matrx");