I'm baffled....

This sounds like your AV program is picking up a cross-site scripting attempt.

Not a trojan, but yeah: Your browsing information and habits are being tracked.

Just use Firefox + NoScript plugin, and you'll be OK. Who cares if "they" know which porno sites you frequent, anyway? <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f61b.svg?0" type="image/svg+xml" standby=":p">:p</object>