JAFFJaff

We recently observed several large scale email campaigns that were attempting to distribute a new variant of ransomware that has been dubbed "Jaff". Interestingly we identified several characteristics that we have previously observed being used during Dridex and Locky campaigns. In a short period of time, we observed multiple campaigns featuring high volumes of malicious spam emails being distributed, each using a PDF attachment with an embedded Microsoft Word document functioning as the initial downloader for the Jaff ransomware.