Malicious PDF — malware analysis report

Static analysis result for SHA-256 26bb3fcee313fc74…

MALICIOUS

PDF

62.2 KB Created: 2021-07-27 05:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6fa08f3e72e18df46dfcfe4f18136e8a SHA-1: 3a1642b88770a234bf691c56f079d10754eb1bd7 SHA-256: 26bb3fcee313fc74a590ca90b1bf2dcdf9104da43fc7a532bc8a14d588fb5bb8
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to facilitate redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9633

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://alotercuman.com/ckfinder/userfiles/files/50282701982.pdf In PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a77d9bb006b---48148472655.pdfIn PDF document text
    • http://crm333.com/documentos/file/gumapanebatereni.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/98918561291.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/37070334786.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/34761441246.pdfIn PDF document text
    • http://bbfrontedelmare.com/userfiles/files/24682423786.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160988c09c9cab---tomupizezajoda.pdfIn PDF document text
    • https://win-win-keiba.site/js/ckfinder/userfiles/files/74409090103.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/6e59960428a827e311962954d7b35aa2/litutozidizapubiro.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608d943812211---3410414705.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/zuwenugiteja.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/85ef6de337afe2f150d9b633cab94dfa/pavamiluj.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/a11746c09be8e7e2392445914fce5347/rukiwofo.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/kogamuv.pdfIn PDF document text
    • http://ducthanggroup.com/webroot/img/files/sonobunepiw.pdfIn PDF document text
    • https://hiroyoung.com/data/files/95034337428.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/9235380b6096791d107497e8a4620253/lojagigokiripikis.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b02cf76af77---90865133168.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/9ea7a78fe5cbc4b9b609f38b370a8bc9/pofirofolatotixat.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160700cc84181b---tepekizegowuwomewi.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b89858d39---85456521116.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a9af2262ec3---95895478444.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/8ac2a1e09f7ce1badc917856d17c090d/34775865272.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=how+do+i+reset+my+android+box+without+reset+buttonPDF link annotation

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