/usr/share/applications/kde4/ is in krita 1:2.8.1-1-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/applications/kde4/krita.desktop
/usr/share/applications/kde4/krita_bmp.desktop
/usr/share/applications/kde4/krita_exr.desktop
/usr/share/applications/kde4/krita_flipbook.desktop
/usr/share/applications/kde4/krita_jp2.desktop
/usr/share/applications/kde4/krita_jpeg.desktop
/usr/share/applications/kde4/krita_odg.desktop
/usr/share/applications/kde4/krita_ora.desktop
/usr/share/applications/kde4/krita_pdf.desktop
/usr/share/applications/kde4/krita_png.desktop
/usr/share/applications/kde4/krita_ppm.desktop
/usr/share/applications/kde4/krita_psd.desktop
/usr/share/applications/kde4/krita_raw.desktop
/usr/share/applications/kde4/krita_tiff.desktop
/usr/share/applications/kde4/krita_xcf.desktop