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):

hah.update(cdTGdMap.tStrng());
        } ele f (cdTGdMap ntancef BaeStream) {
          hah.update(cdTGdMap.peekByte());
        }
      }
    }
    return {
      decrptr,
      dct,
      t,
      cte,
      type: type.name,
      frtChar,
      latChar,
      tUncde,
      hah: hah ? hah.hexdget() : "",
    };
  }
  aync tranlateFnt({
    decrptr,
    dct,
    t,
    cte,
    type,
    frtChar,
    latChar,
    tUncde,
    cFntInf,
  }) {
    cnt Type3Fnt = type === "Type3";