Attach (recommended) or Link to PDF file here: [ar99.pdf](https://github.com/mozilla/pdf.js/files/7086733/ar99.pdf)
https://www.dallasfed.org/fed/~/media/documents/fed/annual/1999/ar99.pdf 

Configuration:
- Web browser and its version: Firefox Browser 72.0.2 (64-bit)
- Operating system and its version: Windows 10 Enterprise version 1809
- PDF.js version: 2.4.152
- Is a browser extension:

Steps to reproduce the problem:
1. Open URL
2. Observe

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/60226822/72994265-6a03c780-3dbc-11ea-8914-42563b321546.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/60226822/72994291-77b94d00-3dbc-11ea-9de2-6214a4d4b361.png)

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

t["Bernhard Modern"] = true;
  t["Berthold City"] = true;
  t.Bodoni = true;
  t["Bauer Bodoni"] = true;
  t["Book Antiqua"] = true;
  t.Bookman = true;
  t["Bordeaux Roman"] = true;
  t["Californian FB"] = true;
  t.Calisto = true;
  t.Calvert = true;
  t.Capitals = true;
  t.Cambria = true;
  t.Cartier = true;
  t.Caslon = true;
  t.Catull = true;
  t.Centaur = true;
  t["Century Old Style"] = true;
  t["Century Schoolbook"] = true;
  t.Chaparral = true;
  t["Charis SIL"] = true;
  t.Cheltenham = true;
  t["Cholla Slab"] = true;
  t.Clarendon = true;
  t.Clearface = true;
  t.Cochin = true;
  t.Colonna = true;
  t["Computer Modern"] = true;
  t["Concrete Roman"] = true;
  t.Constantia = true;
  t["Cooper Black"] = true;