Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9e6c220d07daa6…

MALICIOUS

PDF

42.8 KB Created: 2021-09-14 11:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6723dd1f76f79f96d3b19e38009f252b SHA-1: 0ded0d74b6408f015bc2146d649f73bff3ef08ad SHA-256: 2d9e6c220d07daa6214d863877f9653b8bfbfb5310677843fe48d48679a3ce8c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded links. Heuristics indicate it's a link farm hosted on compromised CMS uploads, suggesting an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing campaign, likely using embedded JavaScript to facilitate redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

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 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://medob.org/SITE/files/editor/file/34567988305.pdf In PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613cdde141b34---mapolenizudune.pdfIn PDF document text
    • http://showdoimovel.com/files/files/12193031521.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/sibegigovosojegigitefozob.pdfIn PDF document text
    • https://cooperadora.grupocreartel.com/documentos/archivos/nalafev.pdfIn PDF document text
    • https://fratellifurloni.it/file/63743032422.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa8887cfc9---zewawirikobomaposava.pdfIn PDF document text
    • http://sineadstone.com/userfiles/file/xevotiwuvanuvebibi.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132593f2d741---popuwevomekok.pdfIn PDF document text
    • https://nexusmediation.nl/files/91633647146.pdfIn PDF document text
    • https://guruvinodji.com/Userfiles/file/dukefis.pdfIn PDF document text
    • http://topstec.com/d/files/40012791833.pdfIn PDF document text
    • http://a-b-i-s.net/layout/bilder/file/tufimaziluku.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/30324204537.pdfIn PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/75168796015.pdfIn PDF document text
    • http://ukonlinedirect.com/userfiles/files/25792557697.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/91314674944.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/rl3ehdspbmrltq5lpgadr6g8j0/gorusiwonad.pdfIn PDF document text
    • https://alpinebadmintonacademy.com/ckfinder/userfiles/files/91707437253.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/puwavoxufesajixelotif.pdfIn PDF document text
    • http://alpes-maritimes.proximeo.com/ckfinder/userfiles/files/81697833346.pdfIn PDF document text
    • http://ichieh.tw/uploads/files/202109120809047239.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/98237793042.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9bdfc1c1d---mikuxaruzezuwepejibewe.pdfIn PDF document text
    • https://navliecky.net/userfiles/file/94518131711.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=best+ereader+for+android+phonePDF link annotation

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