
Attach (recommended) or Link to PDF file here:
[NAPEN16171380959.pdf](https://github.com/mozilla/pdf.js/files/6143802/NAPEN16171380959.pdf)

Configuration:
- Web browser and its version: Firefox 88 Nightly
- Operating system and its version: Windows 10
- PDF.js version:
- Is a browser extension: No

What went wrong? (add screenshot)
![](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-03-15-10-58-27-ce2796.png)


(pfbHeader[4] << 16) |
        (pfbHeader[3] << 8) |
        pfbHeader[2];
    }
    
    var eexecBlock = getEexecBlock(file, eexecBlockLength);
    var eexecBlockParser = new Type1Parser(
      eexecBlock.stream,
      true,
      SEAC_ANALYSIS_ENABLED
    );
    var data = eexecBlockParser.extractFontProgram(properties);
    for (const key in data.properties) {
      properties[key] = data.properties[key];
    }
    var charstrings = data.charstrings;
    var type2Charstrings = this.getType2Charstrings(charstrings);
    var subrs = this.getType2Subrs(data.subrs);
    this.charstrings = charstrings;
    this.data = this.wrap(
      name,
      type2Charstrings,
      this.charstrings,
      subrs,
      properties
    );
    this.seacs = this.getSeacs(data.charstrings);
  }
  Type1Font.prototype = {
    get numGlyphs() {