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Re:Cyberattacks in 12 Nations Said to Use Leaked N.S.A. Hack... by hoschicz on Friday May 12, 2017 @06:12PM (#14328332)
It doesnt involve only pdf.js file, the key is a bug in samba that means that all you need to get infected is to connect to an infected network.
Re:Cyberattacks in 12 Nations Said to Use Leaked N.S.A. Hack... by toyg on Friday May 12, 2017 @06:24PM (#14328414)
Not in Samba, in the SMB protocol implementation on Windows.

Samba servers are safe.