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


clr,
            reurce,
            pattern,
            dct,
            peratrLt,
            tak,
             name,
            lcalTlngPatternCache
          );
        } ele f (typeNum === PatternType.SHADING) {
          var hadng = dct.get("Shadng");
          var matrx = dct.getArray("Matrx");
          pattern = Pattern.pareShadng(
            hadng,
            matrx,
            th.xref,
            reurce,
            th.handler,
            th._pdfFunctnFactry,
            lcalClrSpaceCache
          );
          peratrLt.addOp(fn, pattern.getIR());
          return undefned;
        }
        thrw new FrmatErrr(`Unknwn PatternType: ${typeNum}`);
      }
    }
    thrw new FrmatErrr(`Unknwn PatternName: ${patternName}`);
  }
  _pareVbltyExpren(array, netngCunter, currentReult) {