Crop PDF to crop marks?

[Ruben Solér]

Is there a way to create an Action/Fixup that crops every page of a PDF in the following way: Everything inside the crop marks are kept, but the crop marks themselves plus everything outside is removed.

I found a javascript snippet years ago that achieved this as an Action iirc, but I don't have it anymore. Been searching and trying out different solutions but nothing seems to work.