
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)


[type, subtype] = getFontFileType(file, properties);
    if (type !== this.type || subtype !== this.subtype) {
      info(
        "Inconsistent font file Type/SubType, expected: " +
          `${this.type}/${this.subtype} but found: ${type}/${subtype}.`
      );
    }
    try {
      var data;
      switch (type) {
        case "MMType1":
          info("MMType1 font (" + name + "), falling back to Type1.");
        
        case "Type1":
        case "CIDFontType0":
          this.mimetype = "font/opentype";
          var cff =
            subtype === "Type1C" || subtype === "CIDFontType0C"
              ? new CFFFont(file, properties)
              : new Type1Font(name, file, properties);
          adjustWidths(properties);
          
          data = this.convert(name, cff, properties);
          break;
        case "OpenType":
        case "TrueType":
        case "CIDFontType2":