1. Download https://github.com/pdf-raku/stillhq.com-pdfdb/blob/main/000025.pdf
2. Build/lagom/bin/pdf --render out.png ~/src/stillhq.com-pdfdb/000025.pdf --page 5

Have a task manager open, and kill it quickly – it'll consume tens of gigabytes of ram within seconds.

The fifth page does (courtesy of Build/lagom/bin/pdf --render out.png ~/src/stillhq.com-pdfdb/000025.pdf --page 5 --dump-contents, which completes quickly):

q

1.0 0.0 0.0 1.0 0.0 0.0 cm
100.00 0.00 0.00 100.00 0.00 0.00 cm
/template300 Do
Q

q / Q push and pop the current graphics stack. cm sets an affine transform using the 6 numbers in front of it. Do draws an object. /template300 is an object with these instructions:

q
0.439216 0.541176 0.145098 rg
210 174923415 m
5 w
225 174923325 275 174923225 310 174923415 c
200 174923400 160 174923465 v
250 174923250 210 174923415 y
h
B
Q

rg sets rgb to the previous 3 numbers (0..1). m moves the current path position to xy before it. w sets the line width. c adds a cubic spline using the 6 numbers in front of it. v does the same but replicates the initial point as control point. y also does the same but replicates the final point as second control point. h closes the path. B fills and strokes, using nonzero winding.

All the y coordinates are ginormous and the whole thing is way outside the painter's clip.