Malicious PDF — malware analysis report

Static analysis result for SHA-256 107dd74c22fc6dbb…

MALICIOUS

PDF

166.6 KB
MD5: 6b09106a8d4839ebb9555bba8aeff0c2 SHA-1: 953ee746472e54e3a5fb3174975305afa51dc01b SHA-256: 107dd74c22fc6dbb829ac57dd99bf621887cccbbd8af6c88adbe08e1e15a3755
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a single image designed to look like a legitimate interface, a common tactic for phishing lures. A critical heuristic identified a direct link within the PDF to an MSI installer hosted on 'infocert-dike.firstcloudit.com'. This suggests the document is intended to trick users into downloading and executing a malicious payload, likely for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0003

Heuristics 3

  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 166 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infocert-dike.firstcloudit.com/download/aggiornamenti/Windows/Dike_Infocert_upgrade.msi
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/

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