Looks like it was the old bomb in the envelope trick.Unclear about hands, legs, and abdomen, doctors more worried about his eye sight.
The incident comes days after an envelope containing bullets, addressed to Greece’s general secretary for public revenue, was intercepted at a post office in Athens.
Maybe it's actually his banking history (rather than PM) that was targetted. Back in March, the IMF (International Monetary Fund) had incidents.
http://www.upi.com/Top_News/World-News/2017/05/25/Ex-Greek-PM-Papademos-injured-by-mail-bomb-in-Athens/4961495734878/69-year-old Papademos was appointed caretaker prime minister in November 2011 following concerns the country would exit the Eurozone. He remained in the position until May 2012 when elections were held.
He previously served as the vice president of the European Central Bank from 2002 to 2010 and as governor of the Bank of Greece from 1994 to 2002.