Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d617268702e0eb…

MALICIOUS

PDF

49.2 KB Created: 2021-06-23 10:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7ab7deaef1bef9283238d69542a9d4b9 SHA-1: 5a6ec67245f9ae7e9b9294c270f0bb614d89f811 SHA-256: 32d617268702e0eb99b2360c8d0dda5025980aac773ba6dc0e2601955dd6208e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, likely to distribute further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics confirms the nature of these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6779

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 http://farmaciafoglia.eu/userfiles/files/jejavumesudimepopexix.pdf In PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/25278b5c0e81517cd7fc1cc257f99698/keriwugetibometujuxobe.pdfIn PDF document text
    • https://uppersanduskyrotary.com/cms/files/File/jawikumotabizu.pdfIn PDF document text
    • https://masini-de-ambalat.ro/images/userfiles/fezejolakomu.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/dbdf77d9027099951c50d05e701bb8fb/44012331072.pdfIn PDF document text
    • http://atek-ent.com/upload/file/95010370316.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/gr572bbgjrpg65ibpru5nqo7ic/94792392829.pdfIn PDF document text
    • http://healthywithhart.com/res/file/18338748932.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/86b93c677635c95464e0da26e07c13de/vejebe.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ee3142965---47328042330.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/6ceb42d1f11cd9b6c157b28f30b62e58/99775629402.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/1b4152f0a47b34e6174a6f9b15ec368e/fadiwurakabopolanaru.pdfIn PDF document text
    • http://apartmaji-zunicmile.com/uporabnik/file/gujudi.pdfIn PDF document text
    • http://www.infos-lentilles-de-contact.com/images-sites/files/89348791713.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=downloadable+dictionary+pdfPDF link annotation

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