An extortition scammer has resorted to generate the message html body as base64 encoded image and thus invoking the
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Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
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--_000_AM0PR0502MB3826BAAA518F148354E8B677C6210AM0PR0502MB3826_
Content-Type: text/html; charset="utf-8"
Content-ID: <AD9F277AF4CD694CB27ED0171AA18562@eurprd05.prod.outlook.com>
Content-Transfer-Encoding: base64
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--_000_AM0PR0502MB3826BAAA518F148354E8B677C6210AM0PR0502MB3826_--
--_004_AM0PR0502MB3826BAAA518F148354E8B677C6210AM0PR0502MB3826_
Content-Type: image/jpeg; name="1577826089447.jpg"
Content-Description: 1577826089447.jpg
Content-Disposition: inline; filename="1577826089447.jpg"; size=142669;
creation-date="Wed, 01 Jan 2020 05:01:46 GMT";
modification-date="Wed, 01 Jan 2020 05:01:46 GMT"
Content-ID: <att_img_314060>
Content-Transfer-Encoding: base64