[Fonts have weird names from imported PDFs, cannot locate them.]

When I try and import the attached PDF from Science magazine into Affinity Pub lisher, it cannot recognize several of the fonts. As a result, after font replacement many regions of the paper are missing spaces and the alignment is off for some text boxes. What's more is several of the fonts have weird names, like: AdvP4C4E74, or AdvTT0b7bb6fa.I. What can I do here to make the PDF import smoother?

science.aav3932.pdf

[Path length for curves, perimeter of polygon]

I use affinity to make some scientific figures and do some basic data analysis, and it would be really nice if I could draw a curve or polygon on data and then measure the total length of the curve. As it is, I implemented it myself in bokeh, but it made me sad.