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


buffers.push(currentBuf.join(""));
              currentBuf.length = 0;
            }
            const charCodeLength = this.cMap
              ? this.cMap.getCharCodeLength(charCode)
              : 1;
            for (let j = charCodeLength - 1; j >= 0; j--) {
              currentBuf.push(
                String.fromCharCode((charCode >> (8 * j)) & 0xff)
              );
            }
            continue;
          }
        }
        
        if (!hasCurrentBufErrors()) {
          buffers.push(currentBuf.join(""));
          currentBuf.length = 0;
        }
        currentBuf.push(String.fromCodePoint(unicode));
      }
      buffers.push(currentBuf.join(""));
      return buffers;
    },
  };
  return Font;
})();
var ErrorFont = (function ErrorFontClosure() {
  
  function ErrorFont(error) {