I tend to see alot of scrapers witn 'infopath' at end of UA.
It might be an injection scraper attempts. If the sequence of hex chars is identical see my comment below, may NOT be a scraper but a run-together link somehere.
I posted some 80 educational videos on youtube.
under youtube video description, I put more info,
and links to the non-profit where it was taken,
followed by a blank and link to additional still pix about the topic on my site. (actually the other way around but I'm too lazy to edit)
YOutubs comment parser MISTAKES THE URL by combining the two into one long URL with both websites combined. This would cause 404's when users the world over would click the link to my page and instead get mypage / nonprofit page all rolled up into one URL.
So I had to go back and put a non-URL word betweenn the URLs on youtube via comment editing.
however the info has already been shared with youtube versions in dift countries around the world and seems to take quite a while to update, as I was gettig bad hits for quite a while after. They seem to have stopped now so must eventually update.