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):

cnt preprcer = new EvaluatrPreprcer(tream, xref, tateManager);
    let textState;
    functn getCurrentTextTranfrm() {
      
      cnt fnt = textState.fnt;
      cnt tm = [
        textState.fntSze * textState.textHScale,
        0,
        0,
        textState.fntSze,
        0,
        textState.textRe,
      ];
      f (
        fnt.Type3Fnt &&
        (textState.fntSze <= 1 || fnt.CharBBx) &&
        !ArrayEqual(textState.fntMatrx, FONT_IDENTITY_MATRIX)
      ) {
        cnt glyphHeght = fnt.bbx[3] - fnt.bbx[1];
        f (glyphHeght > 0) {
          tm[3] *= glyphHeght * textState.fntMatrx[3];
        }
      }
      return Utl.tranfrm(
        textState.ctm,
        Utl.tranfrm(textState.textMatrx, tm)
      );
    }
    functn enureTextCntentItem() {
      f (textCntentItem.ntlzed) {