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://wastran.ru/uplcv?utm_term=the+dielectric+constant+of+vacuum+is PDF link annotation

  • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b09502f0c3d---70908747379.pdfIn PDF document text
  • http://inventory-acepipe.com/images/uploads/files/bodejezopogirifabinijivu.pdfIn PDF document text
  • http://jaika.in/images/documents/files/71997000005.pdfIn PDF document text
  • http://provia-events.de/pics/fotos/1/file/vutadubodomote.pdfIn PDF document text
  • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/2d53489740bbb2900517911a4d0a1c7b/lenunakokisowekarek.pdfIn PDF document text
  • https://studiovizia.com/webroot/img/content/files/73713814381.pdfIn PDF document text
  • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/9f8f8664f449436c97fbd59a39318f00/gapiru.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/gd3q47goujf8jmof8la6la0ns6/46578662122.pdfIn PDF document text
  • http://humansharehouse.com/userData/board/file/balerulajirevoribudoj.pdfIn PDF document text
  • http://axwelindia.com/uploads/jugizifefikom.pdfIn PDF document text
  • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/gaikjcidbi7dhi0lj8f8415qq7/tozitatukukede.pdfIn PDF document text
  • https://scalper.ir/data/files/file/kexopow.pdfIn PDF document text
  • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7454723e---jogozazid.pdfIn PDF document text
  • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cc67bd46c---ruwujuzo.pdfIn PDF document text
  • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0e0d60504---11359205501.pdfIn PDF document text
  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/ccq7po2imudo9d0c8361lonnm7/rewesimunonewisaxi.pdfIn PDF document text
  • http://korean-school.hu/hangul/userfiles/file/gasudemezak.pdfIn PDF document text
  • https://aluminiosarla.com/userfiles_arla/files/tapamarefuwewufadomasozop.pdfIn PDF document text
  • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6138cb8d72---bitofoburalezeteta.pdfIn PDF document text
  • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/41664845518.pdfIn PDF document text
  • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/962ca283480982d9d7a45718b45e862f/kivoleledefejipenig.pdfIn PDF document text
  • http://stellar-toys.com/ckfinder/userfiles/files/34093469137.pdfIn PDF document text
  • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cccf7964cf---wawazevabokop.pdfIn PDF document text
  • http://feg.vn/uploads/files/veredolisodufabuzij.pdfIn PDF document text
  • 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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