Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a55c833abf08ecf…

MALICIOUS

PDF

72.3 KB
MD5: dc0cc796903cce3741c32b7731a51c18 SHA-1: fbd317244685e1a65194fbe7e820922b0d41dff0 SHA-256: 4a55c833abf08ecfe4fb3a7f40d34ae5aec5850bc2d79f977c8ee5e8a6f450d4
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: User Execution T1566 Phishing T1566.002 Phishing: Spearphishing Attachment

The PDF file is designed as a lure, presenting itself as an image to entice the user to click on a link. This link, identified as 'https://zolotayavitrina.com/Jan-statement.exe', directly points to an executable payload, indicating a clear attempt to deliver malware. The structure of the PDF also suggests evasion techniques were employed.

Machine Learning

  • Nyx PDF Classifier clean score 0.0036

Heuristics 5

  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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 72 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#

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