/usr/lib/ is in kdelibs5-dev 4:4.8.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libkdnssd.so
/usr/lib/libkemoticons.so
/usr/lib/libkfile.so
/usr/lib/libkjsapi.so
/usr/lib/libkhtml.so
/usr/lib/libkidletime.so
/usr/lib/libkimproxy.so
/usr/lib/libkio.so
/usr/lib/libkjs.so
/usr/lib/kde4/plugins/script/
/usr/lib/kde4/
/usr/lib/kde4/libexec/
/usr/lib/kde4/libexec/kauth-policy-gen
/usr/lib/kde4/plugins/
/usr/lib/libkprintutils.so
/usr/lib/libkpty.so
/usr/lib/libkjsembed.so
/usr/lib/libkrosscore.so
/usr/lib/libkmediaplayer.so
/usr/lib/libkrossui.so
/usr/lib/libknewstuff2.so
/usr/lib/libktexteditor.so
/usr/lib/libknewstuff3.so
/usr/lib/libkunitconversion.so
/usr/lib/kde4/plugins/script/libkrossqtsplugin.so
/usr/lib/libkcmutils.so
/usr/lib/libkde3support.so
/usr/lib/libkdecore.so
/usr/lib/libkdefakes.so
/usr/lib/libkdesu.so
/usr/lib/libkdeui.so
/usr/lib/libkdewebkit.so
/usr/lib/libknotifyconfig.so
/usr/lib/libkntlm.so
/usr/lib/libkparts.so
/usr/lib/libkunittest.so
/usr/lib/libkutils.so
/usr/lib/libnepomuk.so
/usr/lib/libnepomukquery.so
/usr/lib/libnepomukutils.so
/usr/lib/libplasma.so
/usr/lib/libsolid.so
/usr/lib/libthreadweaver.so