Comment 7 for bug 1474710

The imported PDF file displays correctly in Inkscape too, and Inkscape sets the page size (the defined output area) also correctly. Independent of this the PDF seems top contain a huge element which extends beyond the defined page size, and is not clipped by any of the usual PDF boxes (media, crop, etc.) - I tried them all (see Inkscape's PDF import options, near the top).

PDF viewers are not editors, and thus can limit the displayed area to the page size easily - Inskcape on the other hand is a an editor (albeit not a PDF editor), and thus only limits the extent of the drawing content on output.

Anyway - I can't read PDFs myself, so this report will have to wait until someone with skills to interpret PDF data independent of poppler, cairo and Inkscape can investigate whether or not poppler/cairo is correct to include that path unclipped (at its original size) or not.

Would you mind sharing details about the creator software of the PDF file?