Since yesterday Noscript - the extension for Firefox, blocks a request to "panoramtech.net". After some researches, it seems that Panoramtech is a malware. How could my Linux system catch it? What should I do for safely and definitively remove it from my Kubuntu 14.04?
Answered by OP:
The ShowIP extension is the bad guy, and it is calling the malware page.
A new version was pushed out yesterday, v2.5, and it injects a request into every page load to a site thats seems to be well known for malware. I highly recommend disabling it or rolling back to v2.4 if you need it.