Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebaa3abad81279e3…

MALICIOUS

PDF

80.0 KB Created: 2021-05-29 09:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f4dfbdba6b30190e4a0ef1fe299e9af SHA-1: 524656eb336fab2f0d09a5582019f613426e5d32 SHA-256: ebaa3abad81279e33e5feabbeabf6aabada51daee394430209573b8013a57cf0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, likely intended to distribute further malware or facilitate phishing. The document body, though heavily obfuscated, suggests a lure related to a 'Vw polo 9n repair manual free download', aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7748

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://oniceh.ru/uplcv?utm_term=vw+polo+9n+repair+manual+free+download
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609f870010212---99412790117.pdf
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/mvoiu1vkrfvc8g3i3fs475o690/rozegaxetenufigojixazit.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d1ecae0e5---56823018873.pdf
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/a30f2b84efd4e95db6919337e9d19338/kexapi.pdf
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d97c50e4c---zajudidusojuf.pdf
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1f292567d---dirugotulilegekopuni.pdf
    • http://altelaw.com/uploads/image/file/falefojebufuxowalaxinup.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608827cb012f1---zemezipolamojekar.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16073cac538d4b---sitasajufopuviwa.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7d5eb17ef---lexopexonerixek.pdf
    • http://euro-ex.net/images/blog//file/xaluvepan.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/d1kg6ec0mkua985t04d3smr3ae/61932246849.pdf
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/8f9086a51be009f84b45c2b79e7d830e/veselunipuzuvusosizosob.pdf
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/t9f3bd304125lo0hd65n447kkq/78116729178.pdf
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075b5d1ebb88---gabatado.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607640286c4e5---silowimerifoxojafemaf.pdf
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/44cbbd51125b414839391ad280ead876/91584067368.pdf

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