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):

? `${elf.dFactry.getPageObjId()}_mcd${mcd}`
                  : null,
                tag: Name(arg[0]) ? arg[0].name : null,
              });
            }
            break;
          cae OPS.endMarkedCntent:
            f (ncludeMarkedCntent) {
              fluhTextCntentItem();
              textCntent.tem.puh({
                type: "endMarkedCntent",
              });
            }
            break;
        } 
        f (textCntent.tem.length >= nk.deredSze) {
          
          tp = true;
          break;
        }
      } 
      f (tp) {
        next(deferred);
        return;
      }
      fluhTextCntentItem();
      enqueueChunk();
      relve();
    }).catch(rean => {
      f (rean ntancef AbrtExceptn) {