Malicious PDF — malware analysis report

Heuristics 7

• 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/cb57acaee1a6a9ba153d7d308e540659/kiloxiwob.pdf In PDF document text

  • http://studiomedicoveterinariobellucci.eu/userfiles/files/28333236503.pdfIn PDF document text
  • http://wildpflanzen-planung.de/file/15029454007.pdfIn PDF document text
  • http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/zuralemetojarina.pdfIn PDF document text
  • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/b3e418efceb385770cbef9dd8bc9757a/49621261024.pdfIn PDF document text
  • https://makanbanyak.net/contents//files/28427746243.pdfIn PDF document text
  • http://verynailscm.com/user_img/file/94499097823.pdfIn PDF document text
  • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/419832f7d4fb8c37d1513dd4bc3ea1be/walibiwuluwazokose.pdfIn PDF document text
  • http://uni-farm.pl/ckfinder/userfiles/files/gomozez.pdfIn PDF document text
  • http://studiovalentini.eu/userfiles/files/folepafo.pdfIn PDF document text
  • https://kopari.hu/files/file/gogogep.pdfIn PDF document text
  • http://ncabhsa.com/clients/875427/File/teluxonoseraxogixokep.pdfIn PDF document text
  • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743dcb63d30---bodifomipelineziromitu.pdfIn PDF document text
  • http://hublihorse.com/uploads/userfiles/files/93260387701.pdfIn PDF document text
  • http://midel.me/userfiles/file/bojuzezupuminofu.pdfIn PDF document text
  • https://network-italia.com/file/sibupujewopelopumu.pdfIn PDF document text
  • https://birudongker.com/contents//files/87656628468.pdfIn PDF document text
  • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607baf4339924---poxetexalubixesexobamu.pdfIn PDF document text
  • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/97b13usrngqutf0ltt2sqhfmfl/36609655631.pdfIn PDF document text
  • http://apluskleaning.com/admin/images/file/milikoluze.pdfIn PDF document text
  • http://toptoptraining.ru/img/upload/file/dewaxapikuwewax.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=mentoring+and+coaching+in+the+workplace+pdfPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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