Vade Secure is an email-security company that produces a series of reports called "Phisher's Favorites". The 2019 first-quarter (1Q2019) issue shows that the targeting of social media by this kind of hacker has increased by 74.7% compared to 1Q2018. Facebook and Instagram are prominent example of the sites in question.
https://www.notebookcheck.net/Phishing-on-social-media-sites-increased-by-nearly-75-in-the-1st-quarter-of-2019.420038.0.html