Piwik-specific attack?

At least several IPs have been hitting my server and showing up in my Piwik real-time tracker even though they aren’t requesting any HTML pages. They’re only requesting images, piwik.js, and piwik.php. The url parameter appearing along with their piwik.php request is always something like this:

file:///home/poo_master/price_parse/resource_cache/140137400891136tmp2.html

The only reference I’ve found to this sort of thing online is this thread:

http://forum.statcounter.com/vb/showthread.php?t=43288

Does this look like a Piwik-specific attack of some sort?

Hello, we haven’t heard of this or a specific piwik attack. could you please send as much info as possible including full requests from your logs, to security@piwik.org ? thanks