Malicious PDF — malware analysis report

Static analysis result for SHA-256 233968629c39d0d4…

MALICIOUS

PDF

64.0 KB Created: 2021-09-20 19:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 76f459a78be9a542b338ca4c289b9d43 SHA-1: 0e8215115e54c260c0730dff7151535c0eef8e45 SHA-256: 233968629c39d0d4ddc8ecb91db7b7411ed6ef8922b64cb08047b2aac12e5708
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution campaign. It contains embedded JavaScript and a large number of external URLs, many of which are hosted on disposable domains, suggesting an attempt to obscure the true malicious destination. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further indicates a link farm strategy, likely to evade detection or distribute payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3659

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
  • 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://archism.ru/uplcv?utm_term=fast+9+full+movie+hd PDF link annotation
    • http://soles2walk.com/data/file/nadafi.pdfIn PDF document text
    • http://hillsdalehorseboarding.com/ckfinder/userfiles/files/napovaredudu.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/cc7434bc93c6d587fdfa56cb7649ead8/60647363834.pdfIn PDF document text
    • https://dildendilecevirievi.com/upload/ckfinder/files/vawumexitofawir.pdfIn PDF document text
    • http://kcpsystem.com/userData/board/file/94534639119.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/9672357479.pdfIn PDF document text
    • https://kasihpaham.com/contents/files/63196127980.pdfIn PDF document text
    • https://matratva.in/userfiles/file/lufigezuwiruru.pdfIn PDF document text
    • https://mtestbd.com/assets/uploads/files/torugenivadirewazedub.pdfIn PDF document text
    • http://gelinyuanyi.com/upload_fck/file/2021-9-7/20210907060104677753.pdfIn PDF document text
    • https://cyklo-wellness-penzion-palice.cz/content/90813929830.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/62675459840.pdfIn PDF document text
    • https://drosamahetta.com/userfiles/file/29257542813.pdfIn PDF document text
    • http://designbeginnings.com/upload/file/tadonufuvuzovavazumirokuj.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021091107505435.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/47654070375.pdfIn PDF document text
    • http://origo.ws/userfiles/file/tapedalekagefixiniju.pdfIn PDF document text
    • http://www.samuitns.com/image/upload/File/masinovawibud.pdfIn PDF document text
    • http://mfo-fond.ru/ckeditor/ckfinder/userfiles/Images/files/gijopifiti.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/47241734104.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/97780076414.pdfIn PDF document text
    • http://lovesenergy.nl/file/wonerebavijedujukapuworov.pdfIn PDF document text
    • http://multiflex.ru/userfiles/file/43325643175.pdfIn PDF document text

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