
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)


var PFB_HEADER_SIZE = 6;
    var headerBlockLength = properties.length1;
    var eexecBlockLength = properties.length2;
    var pfbHeader = file.peekBytes(PFB_HEADER_SIZE);
    var pfbHeaderPresent = pfbHeader[0] === 0x80 && pfbHeader[1] === 0x01;
    if (pfbHeaderPresent) {
      file.skip(PFB_HEADER_SIZE);
      headerBlockLength =
        (pfbHeader[5] << 24) |
        (pfbHeader[4] << 16) |
        (pfbHeader[3] << 8) |
        pfbHeader[2];
    }
    
    var headerBlock = getHeaderBlock(file, headerBlockLength);
    var headerBlockParser = new Type1Parser(
      headerBlock.stream,
      false,
      SEAC_ANALYSIS_ENABLED
    );
    headerBlockParser.extractFontHeader(properties);
    if (pfbHeaderPresent) {
      pfbHeader = file.getBytes(PFB_HEADER_SIZE);
      eexecBlockLength =
        (pfbHeader[5] << 24) |