Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eba5a0b62728160…

MALICIOUS

PDF

37.6 KB Created: 2021-09-08 21:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b52a1df3c1a25835fdf0da8e186c0eef SHA-1: 4ad074d01da1926e2b62e878767ab85139fcd50b SHA-256: 0eba5a0b62728160af6d1b65057e55176c6ee2fb056140048fc19d6adcca55ff
152 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, which is a common technique for delivering malicious payloads. The heuristic firings indicate this is likely a phishing lure designed to trick users into interacting with malicious content. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload from one of the associated URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7887

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://artasedanasingaraja.com/uploadfck/file/97114246185.pdf In PDF document text
    • https://aventura-agence.lu/userfiles/files/kovazigimatiwud.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613154927258e---43583724444.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161319efa6b38b---58498374799.pdfIn PDF document text
    • http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/wutebovotubajulawi.pdfIn PDF document text
    • http://bekescsaba.varosom.hu/userfiles/files/gemeripozev.pdfIn PDF document text
    • https://shindah.com/images/ckeditor_img/files/74762686715.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/lagetufabimej.pdfIn PDF document text
    • http://jawarakreasi.com/file/javot.pdfIn PDF document text
    • http://tehla.eu/userfiles/file/22713022956.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=small+pdf+em+powerpointPDF link annotation

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