/usr/share/menu/graphicsmagick is in graphicsmagick 1.3.18-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | ?package(graphicsmagick):needs="X11" section="Applications/Viewers"\
title="GraphicsMagick" command="/usr/bin/gm display logo:"
|