Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ace21c3c288442…

MALICIOUS

PDF

64.0 KB Created: 2021-07-26 14:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2d62f84c01daf5b1c8e19be88048f64f SHA-1: 7203bfb234bf06971bd80db8bfdd3c82a3bb2469 SHA-256: 24ace21c3c288442228fece5f6744dab6d25dccf793cefee744b2c8637d55eb7
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or phishing sites. The file's structure and numerous external links suggest it's designed to exploit users through a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9612

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 https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/d4c776e4761ae50fadf953b48ae2460e/dabod.pdf
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f38ad5f803---64382859105.pdf
    • http://nuraski.pl/wsg/userfiles/lexaw.pdf
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f0fbccbfc---vokepavep.pdf
    • http://qca.ch/userfiles/file/sigojilejawefov.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6c1aaa3d8---10407564803.pdf
    • http://nuitsdartistes.eu/images/file/burutetafiwavawirejumusun.pdf
    • http://oxigensupplies.com/shipinc/userfiles/files/xulajagofel.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c03afcc2213d2e84b836049e01cf1f85/tabifenexur.pdf
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/3deb73212d538ad133d045f2c42888a9/levoxowogokagavaxute.pdf
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/5469d9c3ecf7391bdbcf1057ae76c9f2/18521528178.pdf
    • http://studioriboldi.eu/userfiles/files/fenugasesogoxig.pdf
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078bf8f2c68b---womudamonomasuvekijamawo.pdf
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/844c4ca6c8aec3e492b352b65d13bf36/dabobafitidisekorefu.pdf
    • http://beiks.info/public/file/nuloguka.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/wugufenagajaxadapa.pdf
    • https://machnik.net/ckfinder/userfiles/files/jonawatawutowatoxeduvim.pdf
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160763b15ce694---gimupapusomedevifetorituf.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076286b60746---18117642838.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/9dc44b3ff4e99c863360ac40f42eea02/78767639978.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8bd1ea1016---luviv.pdf
    • http://jaatkinson.com/userimages/lujidusoret.pdf
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/9eb012d9a6ff1069ab72aa20582d7a31/38181654908.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=problemas+razonados+de+division+con+respuesta+para+sexto+grado
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/21e61b37a7dae233184d545743094086/lidugizisixam.pdf

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