Malicious PDF — malware analysis report

Static analysis result for SHA-256 98594ddea21a0184…

MALICIOUS

PDF

38.1 KB Created: 2015-12-17 22:57:04 UTC Authoring application: Nitro Pro
MD5: fd873e83bab309ef5499a04e32b00848 SHA-1: 7e09f86ab260a688195373a4007b37e39d0e7c33 SHA-256: 98594ddea21a0184acceda5580249cffa6aa212f9c5dc7ff5d0da70f6c257900
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded JavaScript stream and uses a screenshot lure, indicating an attempt to trick users into interacting with a malicious link. The embedded JavaScript likely facilitates the redirection to the external URI http://www.sapmakinesi.org/js/_cache/, which is a common technique for delivering secondary payloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6699

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7285076-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7285076-0
  • 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 38 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 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.
  • 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.sapmakinesi.org/js/_cache/
    • http://mysticsms.net/veri/
    • http://mysticsms.net/bhd/
    • http://mysticsms.net/jnr/
    • http://mysticsms.net/xpe/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/

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