Are these SQL-injection attacks?

I installed the plugin ‘Firewall’ and received 84 alerts from one IP.
90% of them where directs to my 404 page, but some of them tryed to download files.

Can you guys tell me if these url’s are SQL-injections?
http://www.blog.pcbeveiligen.nl/?widget_id=2&twituser=PCBeveiligen&twitcount=5&get_twitter_data=1

http://www.blog.pcbeveiligen.nl/belangrijk/veilig-internetbankieren-met-ing-een-aantal-feiten-op-een-rij/null

http://www.blog.pcbeveiligen.nl/belangrijk/veilig-internetbankieren-met-ing-een-aantal-feiten-op-een-rij/?mystique=jquery_init&ver=2.4.2

http://www.blog.pcbeveiligen.nl/wp-content/plugins/wp-spamfree/js/wpsf-js.php

http://www.blog.pcbeveiligen.nl/wp-content/plugins/wp-spamfree/img/wpsf-img.php

http://www.blog.pcbeveiligen.nl/belangrijk/veilig-internetbankieren-met-ing-een-aantal-feiten-op-een-rij/?mystique=css

The rest of the url’s where:
http://www.blog.pcbeveiligen.nl/404/

‘Firewall’ says:
This may be a “WordPress-Specific SQL Injection Attack.”