/usr/lib/libreoffice/sdk/ is in libreoffice-dev 1:5.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libreoffice/sdk/bin/
/usr/lib/libreoffice/sdk/bin/cppumaker
/usr/lib/libreoffice/sdk/bin/cppumaker.bin
/usr/lib/libreoffice/sdk/bin/idlc
/usr/lib/libreoffice/sdk/bin/idlc.bin
/usr/lib/libreoffice/sdk/bin/javamaker
/usr/lib/libreoffice/sdk/bin/javamaker.bin
/usr/lib/libreoffice/sdk/bin/regcompare
/usr/lib/libreoffice/sdk/bin/regcompare.bin
/usr/lib/libreoffice/sdk/bin/uno-skeletonmaker
/usr/lib/libreoffice/sdk/bin/uno-skeletonmaker.bin
/usr/lib/libreoffice/sdk/bin/unoapploader
/usr/lib/libreoffice/sdk/bin/unoapploader.bin
/usr/lib/libreoffice/sdk/classes/
/usr/lib/libreoffice/sdk/classes/com/
/usr/lib/libreoffice/sdk/classes/com/sun/
/usr/lib/libreoffice/sdk/classes/com/sun/star/
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/InstallationFinder$StreamGobbler.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/InstallationFinder.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/Loader$CustomURLClassLoader.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/Loader$Drain.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/Loader.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/WinRegKey.class
/usr/lib/libreoffice/sdk/classes/com/sun/star/lib/loader/WinRegKeyException.class
/usr/lib/libreoffice/sdk/classes/win/
/usr/lib/libreoffice/sdk/classes/win/unowinreg.dll
/usr/lib/libreoffice/sdk/config.guess
/usr/lib/libreoffice/sdk/config.sub
/usr/lib/libreoffice/sdk/configure.pl
/usr/lib/libreoffice/sdk/idl
/usr/lib/libreoffice/sdk/include
/usr/lib/libreoffice/sdk/index.html
/usr/lib/libreoffice/sdk/lib/
/usr/lib/libreoffice/sdk/lib/libsalcpprt.a
/usr/lib/libreoffice/sdk/lib/libuno_cppu.so
/usr/lib/libreoffice/sdk/lib/libuno_cppuhelpergcc3.so
/usr/lib/libreoffice/sdk/lib/libuno_purpenvhelpergcc3.so
/usr/lib/libreoffice/sdk/lib/libuno_sal.so
/usr/lib/libreoffice/sdk/lib/libuno_salhelpergcc3.so
/usr/lib/libreoffice/sdk/setsdkenv_unix
/usr/lib/libreoffice/sdk/setsdkenv_unix.sh
/usr/lib/libreoffice/sdk/setsdkenv_unix.sh.in
/usr/lib/libreoffice/sdk/settings/
/usr/lib/libreoffice/sdk/settings/dk.mk
/usr/lib/libreoffice/sdk/settings/platform.mk
/usr/lib/libreoffice/sdk/settings/settings.mk
/usr/lib/libreoffice/sdk/settings/std.mk
/usr/lib/libreoffice/sdk/settings/stdtarget.mk