Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef2d3143537b3e7f…

MALICIOUS

PDF

63.5 KB Created: 2021-08-19 05:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c8f06ea7aa453d6b0ab240d497852e39 SHA-1: 1ec0a3da889e8dec7abf068ac8ed9ee9798f4d60 SHA-256: ef2d3143537b3e7f4a776e474ca2cdb169b221be2ef2d306e27229bbf1163888
154 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised CMS upload storage, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to leverage compromised websites for distributing malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9612

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://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/02ad2838835cbdcd2cdd1cc898f3d7fa/vovojudo.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5399d0320b1e75a9729c2d3b5742dca3/tojitolovevopi.pdf
    • https://phoenixturkey.com/upload/ckfinder/files/11892398238.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097992cef27a---fumonawoponusi.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae5e7876a1---jelarijiredo.pdf
    • http://geyikkimya.com/userfiles/upload/file/dixevopudazemufatukujaga.pdf
    • http://superpart.com/files/fasitoxitefugisi.pdf
    • http://stewartreunion2020.com/clients/2/2a/2a0d9dcdd57715375c9f4393c24df0f2/File/50932395172.pdf
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/5752127063.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/730b6ae0ea5f431442c19eb925fe7866/lujutage.pdf
    • http://ivankotov.ru/img/lib/file/95200689417.pdf
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/fd2da4db78e9079483141478e6ad7587/1750689729.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/cd93273bb8f0fde2da2fce78ec342b32/lawamupekoluleburaso.pdf
    • https://vivaldiroberto.com/img/files/mediafiles/file/37011251849.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160807d16cfb85---73499821563.pdf
    • https://advance-pack.com/editor_upload/file/gujosepapefogamimutesatu.pdf
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/b6e07cea134ebdda634257fce241d47d/70354707786.pdf
    • http://bukvoznaika.ru/ckfinder/userfiles/files/92423050748.pdf
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/cd38db0dc1b4901304d309ebfce048f9/94174641697.pdf
    • http://nesemlak.com/test/images/uploads/files/rowigajujodavazanuli.pdf
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/34bfdcef66a57fe31b63a032d4a1a3e6/7965457440.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5568270b8e---31148385997.pdf
    • http://mondoacquapiscine.com/userfiles/files/xorepek.pdf
    • http://paitoonbox.com/userfiles/files/92955693377.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=ejemplos+de+funciones+de+lenguaje+po%C3%A9tica+o+est%C3%A9tica

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