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.Roman = true;
  t["Rotis Serif"] = true;
  t.Sabon = true;
  t.Scala = true;
  t.Seagull = true;
  t.Sistina = true;
  t.Souvenir = true;
  t.STIX = true;
  t["Stone Informal"] = true;
  t["Stone Serif"] = true;
  t.Sylfaen = true;
  t.Times = true;
  t.Trajan = true;
  t["Trinité"] = true;
  t["Trump Mediaeval"] = true;
  t.Utopia = true;
  t["Vale Type"] = true;
  t["Bitstream Vera"] = true;
  t["Vera Serif"] = true;
  t.Versailles = true;
  t.Wanted = true;
  t.Weiss = true;
  t["Wide Latin"] = true;
  t.Windsor = true;
  t.XITS = true;
});
const getSymbolsFonts = getLookupTableFactory(function (t) {
  t.Dingbats = true;
  t.Symbol = true;
  t.ZapfDingbats = true;