I am trying to find a software that uploads existing PDF files to document sharing sites like issuu/scribd...etc (including the title, description and tags). I found some tools under SEO backlink categories. However, until now, all the ones I found generate PDF files from a text you enter.
Those software generally have a built-in proxy changer, captcha solver and account creators modules. I prefer windows. The most important one is ISSUU. up to $200.