Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3069257c34773fe…

MALICIOUS

PDF

146.0 KB Created: 2007-09-27 13:58:36 -07:00 Authoring application: Adobe Acrobat 6.0 (via Adobe Acrobat 6.0 Image Conversion Plug-in)
MD5: 0a4d956c79747f8ccfdf965a465c9e1c SHA-1: 95d63d6aae9c19714b21f4091b4a0a8bb7efd747 SHA-256: d3069257c34773fe200ceea5a8661766cb42d0f9b333f727c5611d13aab43a5a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment

The PDF contains embedded JavaScript and a clickable URI that points to a raw IP address, indicating a phishing attempt. The ML classifier strongly suggests maliciousness. The heuristic 'PDF_IMAGE_LURE' confirms the use of an image-only document with an action trigger, a common tactic for luring users into clicking malicious links. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9870

Heuristics 7

  • 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 2 image(s), only 0 text block(s), carries a click-outward action, and is only 145 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://111.90.158.92:9090/gifview/plugin2.php)/S/URI
    • http://111.90.158.92:9090/gifview/plugin2.php
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

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