I'm trying to download some PDF's from http://www.jre.co.jp/news/20160630.html (note, you must use IE to open the pdfs for some reason). However, whenever I download them, I get a blank pdf (with the right number of pages) or a pdf which say's I cannot download the document on each page (again with the right number of pages).
I checked the permissions and there is no Document Open password, but there is a permissions password. I've tried unlocking the permissions using PDFUnlock!, but still just get a blank document.
Could somebody point me towards a method for downloading the pdf? I find it odd that I can view the pdf online, but not download it.
Edit: I'd also appreciate if somebody could explain how the website is stopping me from downloading the pdfs.