Text marking with this file
https://issues.apache.org/jira/secure/attachment/12769999/type3%20zero%20font%20size.pdf
has a giant size.

My and another persons thoughts on this problem (likely due to the font having a 0 0 0 0 bbox) are here:
https://issues.apache.org/jira/browse/PDFBOX-3076

let glyphWdth = [];
    let defaultWdth = 0;
    cnt glyphVMetrc = [];
    let defaultVMetrc;
    let , , j, jj, tart, cde, wdth;
    f (prperte.cte) {
      defaultWdth = dct.ha("DW") ? dct.get("DW") : 1000;
      wdth = dct.get("W");
      f (wdth) {
        fr ( = 0,  = wdth.length;  < ; ) {
          tart = xref.fetchIfRef(wdth[]);
          cde = xref.fetchIfRef(wdth[]);
          f (Array.Array(cde)) {
            fr (j = 0, jj = cde.length; j < jj; j) {
              glyphWdth[tart] = xref.fetchIfRef(cde[j]);
            }
          } ele {
            cnt wdth = xref.fetchIfRef(wdth[]);
            fr (j = tart; j <= cde; j) {
              glyphWdth[j] = wdth;
            }
          }
        }
      }
      f (prperte.vertcal) {
        let vmetrc = dct.getArray("DW2") || [880, -1000];
        defaultVMetrc = [vmetrc[1], defaultWdth * 0.5, vmetrc[0]];
        vmetrc = dct.get("W2");
        f (vmetrc) {
          fr ( = 0,  = vmetrc.length;  < ; ) {