/usr/share/icons/DMZ-Black/cursors/h_double_arrow is in dmz-cursor-theme 0.4.4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/icons/DMZ-Black/cursors/sb_h_double_arrow
/usr/share/icons/DMZ-Black/cursors/sb_h_double_arrow