Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd718e45fb78369…

MALICIOUS

PDF

48.0 KB Created: 2021-10-01 03:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 375b56a29efa7da61a58882d628261a6 SHA-1: 29e0a914b5b162dda11ca138de282c22f0d7caa3 SHA-256: 0dd718e45fb783692d679530f8cd47655d8020727fb7cfcb1c82b9c1f0c2e5a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised or disposable hosting domains, indicative of a link farm used for malicious redirection. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of multiple external URIs and link farms suggests an attempt to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7892

Heuristics 5

  • 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.
  • 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://seoulmenu.com/uploads/files/wajugikobup.pdf In PDF document text
    • http://hebammenglueck.de/ckfinder/userfiles/files/rimarixilabigagopepad.pdfIn PDF document text
    • http://www.waetsukai.jp/system/ckfinder/userfiles/files/nemire.pdfIn PDF document text
    • http://lisaarkin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bemiwomixirawuvabi.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/2698906935.pdfIn PDF document text
    • http://gmicropilotes.com/uploads/files/91117713107.pdfIn PDF document text
    • http://zatuchlina.cz/upload/file/58303077504.pdfIn PDF document text
    • https://nepalfinepashmina.com/userfiles/file/wedaxizosadotamujofozu.pdfIn PDF document text
    • http://support-cmu.com/filedata/file/gakotazo.pdfIn PDF document text
    • http://mirai-kankyo.com/userfiles/files/fuvapagopivalodikagudu.pdfIn PDF document text
    • http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/fuxisoguzizusa.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613de8e65da52---72825153545.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/rujewutavenejejinogipevuw.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/82248596807.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/gedotirasobenu.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/61520090359.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/gebofutaf.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/d9189ebee952d01496d46a3fefdee4e7/zoxonaj.pdfIn PDF document text
    • https://rgcsmt.org/ckfinder/userfiles/files/renewegumuriz.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/533a8e7ce90bd11f4fc4a5626a62ee10/99886836754.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/mifubotopinemulone.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/81d41537205a9181ddd2c3d5cf319236/lokiwatejijete.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=beethoven+ode+to+joy+ringtonePDF link annotation

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