/usr/share/pixmaps/big-xfig.xpm is in xfig 1:3.2.5.c-3+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/pixmaps/xfig64x64.xpm
/usr/share/pixmaps/xfig64x64.xpm