/usr/share/doc/kdiff3-doc/html/iteminfo.png is in kdiff3-doc 0.9.96-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/kdiff3-doc/html/../../kde/HTML/en/kdiff3/iteminfo.png
/usr/share/doc/kdiff3-doc/html/../../kde/HTML/en/kdiff3/iteminfo.png