Malicious PDF — malware analysis report

Static analysis result for SHA-256 28a74181d5bf4043…

MALICIOUS

PDF

64.0 KB Created: 2021-09-19 21:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9316681f1d4c77a0f10050a57515c245 SHA-1: 774f39b3ff60f284a4f0cf1d450b329da5403bef SHA-256: 28a74181d5bf404324ce9c8f93b54d17321803a8cc5c08827b2168d8de17c84a
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to a compromised site or download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6381

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
  • 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://rockbond-aac.com/id-admin/fckImages/file/23884905643.pdf In PDF document text
    • http://kasintorn.com/images/upload/files/fubezogoki.pdfIn PDF document text
    • http://netisiletisim.com/guvennet/resimlerfiles/91712317751.pdfIn PDF document text
    • http://dush-kz.ru/uploads/fck/file/69094806476.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/11339019759.pdfIn PDF document text
    • http://kartinatv.org/uploads/files/gaminor.pdfIn PDF document text
    • http://diplomat2014.ru/ckfinder/userfiles/files/60184642882.pdfIn PDF document text
    • http://daejonggyoyc.com/userfiles/file/20210907144620.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/8218735736.pdfIn PDF document text
    • https://indolabtek.com/Uploads/userfiles/files/7200233512.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/dubijajov.pdfIn PDF document text
    • http://lighthouse-connection.at/myPix/file/nepowobusenuvadakinulozu.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613be9684b780---tabenodonizokebamaxopope.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/xesilubozapudawalakibu.pdfIn PDF document text
    • http://sandlnae.com/data/editor/file/xotibisidumafik.pdfIn PDF document text
    • https://muachungbaohiem.com/uploads/userfiles/file/7465870655.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/28843709926.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613810d3f0fc6---palufidadamibis.pdfIn PDF document text
    • https://www.agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/55313957066.pdfIn PDF document text
    • https://ddmmaze.altruistictech.org/documents/img/upload/files/23041699726.pdfIn PDF document text
    • http://secretlove.ch/ckfinder/userfiles/files/18851605064.pdfIn PDF document text
    • https://magatek.com/documents/file/jilefoligobagawa.pdfIn PDF document text
    • http://sbsinternationalschool.org/userfiles/file/665385586.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///nuxobopa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=restart+emulator+androidPDF link annotation

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