Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3b293470bdb58d…

MALICIOUS

PDF

22.2 KB Created: 2020-03-28 12:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 014ef84a2332f72f8c82548d28ddc5eb SHA-1: a34726934e7d76a45e3bb0799cb61c80796657fa SHA-256: 7b3b293470bdb58d28d78913c5dc43f622cceb8c0e410f4c7df726bb97d2cc73
112 Risk Score

Malware Insights

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

This PDF document is identified as malicious by an ML classifier and exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing a click-outward action. The document body and heuristics reveal numerous external URLs, suggesting a link farm designed to redirect users to potentially malicious content. The primary lure appears to be a disguised link related to graphing polar equations on a TI-84 calculator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 22 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://mcabvt.com/uploads/1/3/0/6/130621119/130621119.html#how+to+graph+polar+equations+on+ti-84+plus
    • http://8090qipaiyouxi.br3h.com/uploads/1/3/0/5/130543093/2302939.pdf
    • http://studiosing.com/uploads/1/3/0/6/130639239/zupazip_xotobopedamuwo.pdf
    • http://www.earlwood.physio/uploads/1/3/0/5/130543476/7592085.pdf
    • http://aprendizagemdadocencia.com/uploads/1/3/0/4/130489467/nonirigema.pdf
    • http://athenatyler.wedding/uploads/1/3/1/0/131070402/gaxaketodivema-xobavewafunir-pusaj.pdf
    • http://orovalleyhealthandwellness.com/uploads/1/3/0/3/130379575/bitijoteb.pdf
    • http://solana-beach-retreat.com/uploads/1/3/0/6/130640179/wovada.pdf
    • http://compareemergencyfood.com/uploads/1/3/0/2/130289421/voradad_tosonatolizu_refenat_mizasegogi.pdf
    • http://myblessedart.com/uploads/1/3/0/4/130489417/xawovebigenadizufal.pdf
    • http://phoenixparkour.com/uploads/1/3/0/7/130776114/setiwogaxitojone.pdf
    • http://bramblies.com/uploads/1/3/0/5/130589008/lupufeb.pdf

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