These are the temporary files that were used as lock files by MSOffice applications... ~originalFile.doc.
There's some room for improvement in broadening the mime detection, and there's more info that we can extract from the temp files beyond "author". If anyone can find a spec for these files...
SUCCESS: Integrated in Tika-trunk #1065 (See https://builds.apache.org/job/Tika-trunk/1065/)
Add mime detection and parser for Microsoft Owner File (TIKA-2008). (tallison: rev 01a9b6db5ac20a63f2b9de9c15de1b12ee2bde06)
FAILURE: Integrated in tika-2.x #111 (See https://builds.apache.org/job/tika-2.x/111/)
TIKA-2008 – add mime definition and parser for MSOwnerFile (tallison: rev 60d4e3ff2aca931fd8e36d0f8ca8c2944e788aa4)