Only Sucuri flags defacement

Viruses and worms
1

See: https://www.virustotal.com/nl/url/867e95cda50e8bbbba45beaedc1dce9a573508adbf32b48ddfcf11777ce99141/analysis/1409336899/
and : http://quttera.com/detailed_report/emir-sultan.nl
and flagged here: http://sitecheck.sucuri.net/results/emir-sultan.nl
Web site defaced. Details: http://sucuri.net/malware/entry/MW:DEFACED:01

HacKeD By 3QRAB ALMO5EAM

pol

2

probably because there is no malicious code
https://www.virustotal.com/en/file/8a351d314237af835c61ba455eb913eb0526eccc96cd795aeded9fae98efb388/analysis/1409337699/

3

Probably, but site software is vulnerable and therefore site could be hacked:

Web application version:
WordPress version: WordPress
WordPress theme: http://www.vishwainfoways.com/wp-content/themes/twentyten/
Outdated Web Server Apache Found: Apache/2.2.26

Blacklist Status
Domain clean by Google Safe Browsing: emir-sultan.nl
Domain clean by Norton Safe Web: emir-sultan.nl
Domain clean on Phish tank: emir-sultan.nl
Domain clean on the Opera browser: emir-sultan.nl
Domain clean by SiteAdvisor: emir-sultan.nl
Domain clean by the Sucuri Malware Labs blacklist: emir-sultan.nl
Domain clean on SpamHaus DBL: emir-sultan.nl
Domain clean by Bitdefender: emir-sultan.nl
Domain clean on Yandex (via Sophos): emir-sultan.nl
Domain clean by ESET: emir-sultan.nl

4
Probably, but site software is vulnerable and therefore site could be hacked:
that is not a job for antivirus to report ;)