Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fc954ec9a3afff…

MALICIOUS

PDF

38.9 KB Created: 2021-09-26 01:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6167189dcc8f5f4d41cf590668c64ea1 SHA-1: dc34830764799ce8e249a183f9afc97a15fe0370 SHA-256: e7fc954ec9a3afffd51656f0b573d3433465f660968e048ec93b17f8542562f3
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a full-page image designed to obscure clickable links, a common tactic to deceive users into navigating to malicious websites. The document body is heavily obfuscated, preventing analysis of its direct content, but the presence of numerous external URIs and the overall structure suggest it functions as a link farm or a redirector to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

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 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.
  • 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://healthlantern.com/ckeditor/ckfinder/userfiles/files/papumetudenofabajixuxur.pdf In PDF document text
    • http://harissarantis.com/userfiles/files/51955673151.pdfIn PDF document text
    • http://forma8.kz/ckfinder/userfiles/files/1576434993.pdfIn PDF document text
    • https://willmarareachamber.com/ckfinder/userfiles/files/66367577348.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/donezoguraro.pdfIn PDF document text
    • http://iweldbot.com/ckfinder/pho/files/83368008880.pdfIn PDF document text
    • https://kaptenhoki.net/contents/files/dopedoguromanovowaw.pdfIn PDF document text
    • http://coinproject.com/userfiles/image/file/pejuziwexobasobasulegeki.pdfIn PDF document text
    • http://www.badischer-kunstverein.de/ckfinder/userfiles/files/guwaxodenijelenug.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/sovozapirakakinakage.pdfIn PDF document text
    • http://highdesertrent.com/newsite/images/uploads/file/34906136071.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/549e4710d98437fd56f727b4af2c7ca3/xisafa.pdfIn PDF document text
    • http://aokunoil.com/ckfinder/userfiles/files/kanavezomidetabedaka.pdfIn PDF document text
    • http://stavclearing.ru/upload/files/17637286293.pdfIn PDF document text
    • http://ficfart.org/userfiles/file/62921414648.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1614c5acc6f662---68016222504.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=launcher+10+androidPDF link annotation