[`http://www.ei.ruhr-uni-bochum.de/media/crypto/veroeffentlichungen/2010/08/08/baileypaaroefjc.pdf`](http://www.ei.ruhr-uni-bochum.de/media/crypto/veroeffentlichungen/2010/08/08/baileypaaroefjc.pdf) is severely mis-rendered by the version of pdf.js bundled with Firefox 38.0.5:

![screen shot of misrendered PDF using pdf.js](https://cloud.githubusercontent.com/assets/325899/8235479/3876046e-15b0-11e5-97c0-ecbb5d9f8ee8.png)

You can see that practically every word has some blanks where letters should be.

Note that Adobe Reader (11.0.09) does a _better_ job of rendering but still has many missing characters, and throws up an error message about a font that it "cannot extract", so the PDF itself may be ill-formed (in which case pdf.js should give an error message too).

![screen shot of the same PDF with Adobe Reader 11.0.09](https://cloud.githubusercontent.com/assets/325899/8235615/da33e866-15b0-11e5-96a2-8b9f15c6f74d.png)

properties.ascent = Math.max(fontBBox[3], fontBBox[1]);
        properties.descent = Math.min(fontBBox[1], fontBBox[3]);
        properties.ascentScaled = true;
      }
      let charset, encoding;
      if (cff.isCIDFont) {
        const fdArrayIndex = this.parseIndex(topDict.getByName("FDArray")).obj;
        for (let i = 0, ii = fdArrayIndex.count; i < ii; ++i) {
          const dictRaw = fdArrayIndex.get(i);
          const fontDict = this.createDict(
            CFFTopDict,
            this.parseDict(dictRaw),
            cff.strings
          );
          this.parsePrivateDict(fontDict);
          cff.fdArray.push(fontDict);
        }
        
        encoding = null;
        charset = this.parseCharsets(
          topDict.getByName("charset"),
          charStringIndex.count,
          cff.strings,
          true
        );
        cff.fdSelect = this.parseFDSelect(
          topDict.getByName("FDSelect"),
          charStringIndex.count
        );