Comment 5 for bug 905629

BTW - the SVG file appears to have been created with CorelDraw (originally), and only later edited in Inkscape:
 <!-- Creator: CorelDRAW -->
and includes some tags/attributes which Inkscape itself does not create, and only partially supports (viewBox, inline CSS, global fill-rule style property, possibly others).

Could you please test with the attached cleaned-up version [1]?

[1] steps:
1) Vacuum defs to remove all no longer referenced gradient defs (drastic reduction of file size)
2) remove filter effects (blend mode) which have no effect because background is not enabled (-> layer blend mode 'darken')
3) remove redundant paths with reduced opacity which duplicate the black outlines without visual effect, but cause more complex structures in the PDF file format (SVG's global opacity does not exist as 1:1 feature in PDF).
4) reorganized content into layers (fill, outline, glows on top)

AFAICT the "cleaned-up" version looks exactly the same as the original file ( could be wrong though).