Thanks for trying to help, the problem was (and still is) the creation of Baidu account without Chinese mobile number, not in the downloading itself. Ended up shoving both the file ID and the password into pan.baiduwp.com (which JDownloader2 uses to get files from Baidu without the need to make aforementioned account) and letting it take care of that shit.
The DLC looks legit but I didn't test it. VirusTotal says it's clean (2/70 from some noname AVs).
https://www35.zippyshare.com/v/0U7KwJbG/file.html
The link is valid for 30 days since the last download unless shit happens.
Edit: oh look, it only took the mods 5 (five) days to check if this post is spam or not - blazing fast, totally helpful and absolutely not a cancer of their own fucking forums!
/sarcasm
Thanks for posting the mirror, three links are better than two.