Attach (recommended) or Link to PDF file here:
https://web.archive.org/web/20091223123331/http://sci2s.ugr.es/keel/pdf/specific/articulo/alp99.pdf
(aka `tests/pdfs/issue1936.pdf`)
 
When I copy/paste the multiplication sign on the first line of the first page, I got a `£`.
And when I do the same in evince I got a `×` (the same in chrome).
The font descriptor is:
```
<< /Ascent 0 /CapHeight 749 /CharSet (/multiply) /Descent 0 /Flags 262212 /FontBBox [ -27 -940 1332 825 ] /FontFile3 59 0 R /FontName /KHPEPJ+CMBSY10 /ItalicAngle -14.035 /StemV 0 /Type /FontDescriptor >>
```
So it should be possible to guess the correct character in using the `CharSet` entry:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#page=291


encodingId: -1,
            mappings: [],
            hasShortCmap: false,
          };
        }
        var format = file.getUint16();
        file.skip(2 + 2); 
        var hasShortCmap = false;
        var mappings = [];
        var j, glyphId;
        
        if (format === 0) {
          for (j = 0; j < 256; j++) {
            var index = file.getByte();
            if (!index) {
              continue;
            }
            mappings.push({
              charCode: j,
              glyphId: index,
            });
          }
          hasShortCmap = true;
        } else if (format === 4) {
          
          
          var segCount = file.getUint16() >> 1;
          file.skip(6); 
          var segIndex,
            segments = [];