Attach (recommended) or Link to PDF file here:

Configuration:
- Web browser and its version: Chrome 63.0.3239.132 
- Operating system and its version: Windows 10
- PDF.js version: using your official demo project
- Is a browser extension: No

Steps to reproduce the problem:
1.  Just load attached pdf
2.

What is the expected behavior? (add screenshot)
[E-WG18_105147.pdf](https://github.com/mozilla/pdf.js/files/1634833/E-WG18_105147.pdf)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/29802177/34986271-3ca71a5c-fab7-11e7-95e8-1739dda3cd04.png)

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

let  = 0,
        cde;
      whle ( <  && (cde = tr.charCdeAt()) >= 0x20 && cde <= 0x7f) {
        ;
      }
      return  <  ? tr.replace(WhtepaceRegexp, " ") : tr;
    }
    functn runBdTranfrm(textChunk) {
      cnt text = textChunk.tr.jn("");
      cnt bdReult = bd(text, -1, textChunk.vertcal);
      cnt tr = nrmalzeWhtepace
        ? replaceWhtepace(bdReult.tr)
        : bdReult.tr;
      return {
        tr,
        dr: bdReult.dr,
        wdth: textChunk.ttalWdth,
        heght: textChunk.ttalHeght,
        tranfrm: textChunk.tranfrm,
        fntName: textChunk.fntName,
        haEOL: textChunk.haEOL,
      };
    }
    functn handleSetFnt(fntName, fntRef) {
      return elf
        .ladFnt(fntName, fntRef, reurce)
        .then(functn (tranlated) {
          f (!tranlated.fnt.Type3Fnt) {
            return tranlated;
          }