[Libreoffice] Are these wmf files real malware or just antivirus false positive?

Hello Caolán, *

While I'm building LibO, avast antivirus warn me for the malware in 3 files:
* svtools/qa/cppunit/data/wmf/pass/CVE-2006-4071-1.wmf for Other:Malware-gen
* svtools/qa/cppunit/data/wmf/fail/CVE-2006-0143-1.wmf and
* svtools/qa/cppunit/data/wmf/fail/CVE-2006-0143-2.wmf for Win32:WMF-B [Expl]

Then, I submit these zipped 3 files to virscan.org, and the result is
at http://r.virscan.org/dedc26da4435da8193586dec1b933dba

I found that you have committed these files, so I write to ask you
that: is it false positive of antivirus?

Best Regards,
And sorry if any of my words sound offensive. English isn't my native tongue ;)
--
Korrawit Pruegsanusak