Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e30f34e0781a877…

MALICIOUS

PDF

39.9 KB Created: 2021-09-27 23:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: deb72976aec0d99b4872c28b6e77c341 SHA-1: 14ce807b0045573e1dc7e74d9680fe9030c9409f SHA-256: 3e30f34e0781a877fbf0f9768e284f448f9cd4d6a7b8a9b85ebaef6c24770601
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as a phishing lure due to its small size, image-only content, and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates it's designed to trick users into clicking an action, likely leading to a malicious site. The ClamAV detection and ML classifier further support its malicious nature, suggesting it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9416

Heuristics 5

  • 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 39 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.
  • 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://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/ar8uim6fmo3qn7opqd1ilu08bf/gowuxukimiwep.pdf In PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/nogabadedufolebifuvoj.pdfIn PDF document text
    • http://familiegravesen.dk/ckfinder/userfiles/files/32712105804.pdfIn PDF document text
    • https://eko-briketes.lv/userfiles/files/54255699157.pdfIn PDF document text
    • http://bajkolandia-leszno.pl/userfiles/file/53319541146.pdfIn PDF document text
    • http://oralrem.kz/ckfinder/userfiles/files/nutunamepa.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614069d172e28---79247735889.pdfIn PDF document text
    • http://amunt.madteam.net/ckfinder/userfiles/files/12761942790.pdfIn PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/69295516886.pdfIn PDF document text
    • http://vipacademy.org/userfiles/file/roxupopopoxepagigude.pdfIn PDF document text
    • http://cascad-trans.ru/files/96204723924.pdfIn PDF document text
    • http://mayphatdienngocquang.com/media/ftp/file/46970255209.pdfIn PDF document text
    • https://www.hotel-restaurant-plainfaing.fr/ckfinder/userfiles/files/verusigamivomepefezod.pdfIn PDF document text
    • http://hainescentreasia.com/images/file/97145979904.pdfIn PDF document text
    • http://www.dogwoodagility.nl/ckfinder/userfiles/files/19654361464.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/52358197215.pdfIn PDF document text
    • https://kattliv.com/kattliv/admin/userfiles/file/wibomez.pdfIn PDF document text
    • http://barexkft.hu/userfiles/file/tavinilovemibogevil.pdfIn PDF document text
    • http://npas.ru/pic/file/moluk.pdfIn PDF document text
    • https://wroclawmodelshow.pl/ckfinder/userfiles/files/xefije.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=epub+reader+app+androidPDF link annotation

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