Malicious PDF — malware analysis report

Static analysis result for SHA-256 6632436de241cb6d…

MALICIOUS

PDF

60.9 KB Created: 2021-08-28 11:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: dc464b7eff7c3de44d59d5ce9fc654db SHA-1: 4450148bbc10514e97d60043ff5c98797061f0e8 SHA-256: 6632436de241cb6dcc3ad40328d5a53cd44736290ba5cdffa2dad5e87be3c3ed
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous compromised WordPress upload directories and other disposable hosting sites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8776

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
  • 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 https://ppntassone.it/dati/upload/file/xumomos.pdf In PDF document text
    • http://architects-desk.com/uploadsfile/kavakufijetemomo.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/d17c7c54a885efd9a1a9cec4b0c8d819/pezovudefexad.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/792959535bebf5f0687da77f67541ce1/4604803513.pdfIn PDF document text
    • http://www.tm-africa.com/beta/public/uploads/cms_filescms_files/52970743607.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797aabd3a0d---42767847441.pdfIn PDF document text
    • http://www.nagsa.es/ckfinder/userfiles/files/20299823685.pdfIn PDF document text
    • http://asokmontridental.com/userfiles/file/55506980136.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/21536575547.pdfIn PDF document text
    • https://clickkedai.com/userfiles/file/xegojaletasadaz.pdfIn PDF document text
    • http://mariekevanvlierden.nl/survey/userfiles/files/sazafizamixabesuzunijub.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160856943a755e---tujevetazapaxexajijelojim.pdfIn PDF document text
    • http://irishvaughans.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/rarovojosixikudufe.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/zukirujigavinanitezinetiz.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/kepik.pdfIn PDF document text
    • https://xn--fct8ml6mwue.tw/uploads/files/watozapunigubu.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/1c6a64778432ff26aa82e46c1a9d8a2a/ketusujugesowo.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b498ddac563---zegetikek.pdfIn PDF document text
    • http://womenshealthcarenp.com/clients/2/29/29a32d4da59f0b4eaa4573e1354aeabc/File/jekipugasopewozajovedep.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/86926877164.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd203da92c---naxolisiniw.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/fdd62e1f067d425c5c7c49488b23d89e/vifiruvopusisewudegedo.pdfIn PDF document text
    • https://vivaldiroberto.com/img/files/mediafiles/file/numosefij.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/86025929895.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=non+material+culture+meaningPDF link annotation

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