/usr/include/KF5/KBlog/kblog/ is in libkf5blog-dev 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/include/KF5/KBlog/kblog/Blog
/usr/include/KF5/KBlog/kblog/BlogComment
/usr/include/KF5/KBlog/kblog/BlogMedia
/usr/include/KF5/KBlog/kblog/BlogPost
/usr/include/KF5/KBlog/kblog/Blogger1
/usr/include/KF5/KBlog/kblog/GData
/usr/include/KF5/KBlog/kblog/MetaWeblog
/usr/include/KF5/KBlog/kblog/MovableType
/usr/include/KF5/KBlog/kblog/WordpressBuggy
/usr/include/KF5/KBlog/kblog/blog.h
/usr/include/KF5/KBlog/kblog/blogcomment.h
/usr/include/KF5/KBlog/kblog/blogger1.h
/usr/include/KF5/KBlog/kblog/blogmedia.h
/usr/include/KF5/KBlog/kblog/blogpost.h
/usr/include/KF5/KBlog/kblog/gdata.h
/usr/include/KF5/KBlog/kblog/kblog_export.h
/usr/include/KF5/KBlog/kblog/metaweblog.h
/usr/include/KF5/KBlog/kblog/movabletype.h
/usr/include/KF5/KBlog/kblog/wordpressbuggy.h