Hello,
I'm interested in you're project and I've successfully completed multiple backlink analysis projects and I'm sure that I'll mark all the bad/spammy links that point to you're. I have a system that contains multiple stept.
1. Collect all the backlinks. If you have a list it would be good as i need them from multiple sources. The most important is the links from you're Webmasters Console because I need to see how many backlinks google see and what anchor text. I'll collect more from [login to view URL], Ahrefs, MajesticSEO, Raven and a custom build crawler.
2. Analysis. Here I'll get all the links and check is any the domains are de-indexed and mark them for removal. Anchor Text density, the last updated targeted this aspect and it's very important that you keep any keywords under 5%, except for branded/brandable. Link Farms, this aspect is still present and some websites are still blacklisted by google. OBL(outgoing links) this aspect is very important! All backlinks must have less than 150 links. This number is based on a study that shows that most websites have ~100 links.
3. Report. I'll complete a report where there will the 3 tabs, All backlinks, Good/Safe, Bad/Toxic
In 2013 were to main updates that targeted diffrent things, please check you're Webmastee Tools if you;ve got any messages from the Google Spam Team.
We can talk more here, by ma-il or over sk-y-pe.
Best regards,
Cosmin.