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[1005] = 49;
  t[1006] = 50;
  t[1007] = 51;
  t[1008] = 52;
  t[1009] = 53;
  t[1010] = 54;
  t[1011] = 55;
  t[1012] = 56;
  t[1013] = 57;
  t[1081] = 37;
  t[1085] = 43;
  t[1086] = 45;
});
function getStandardFontName(name) {
  const fontName = normalizeFontName(name);
  const stdFontMap = getStdFontMap();
  return stdFontMap[fontName];
}
export {
  getFontNameToFileMap,
  getGlyphMapForStandardFonts,
  getNonStdFontMap,
  getSerifFonts,
  getStandardFontName,
  getStdFontMap,
  getSupplementalGlyphMapForArialBlack,
  getSupplementalGlyphMapForCalibri,
  getSymbolsFonts,
};