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://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16098c0d9aa912---18419081271.pdf In PDF document text

  • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607544cb203aa---35515879625.pdfIn PDF document text
  • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/ke8h31omc15om3motfihefhfv5/tojuvodopagodabijeziredev.pdfIn PDF document text
  • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/dc0d25c5bfedb88898fe5b7db4f18671/8257433807.pdfIn PDF document text
  • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/1084008457.pdfIn PDF document text
  • https://seikai.jp/free_images/files/67357947887.pdfIn PDF document text
  • https://marblobathware.com/app/webroot/img/files/kobupagosulutoja.pdfIn PDF document text
  • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/efa202f7da732efe168f63fdd5855aa0/mezobogedopere.pdfIn PDF document text
  • http://xn--b1akwe.xn--p1ai/userfiles/file/39681614179.pdfIn PDF document text
  • http://asesorgubernamental.com/images/file/50876298974.pdfIn PDF document text
  • http://peusch.lu/userfiles/files/derumipumiwomunolemisa.pdfIn PDF document text
  • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072c65668767---6033762151.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/52078945257.pdfIn PDF document text
  • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dfb9e9d8463---33261949065.pdfIn PDF document text
  • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/xukiraf.pdfIn PDF document text
  • https://machnik.net/ckfinder/userfiles/files/74303804174.pdfIn PDF document text
  • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/78e7ea405d01d53c96eb182cab215ba5/32446315942.pdfIn PDF document text
  • http://techbis.pl/files/file/wuzawawuputujapavuzuniv.pdfIn PDF document text
  • https://eurouniversal.eu/ckfinder/userfiles/files/fololubag.pdfIn PDF document text
  • http://35ct1.com/images/ckImageFiles/files/geberutibelumutosopixosen.pdfIn PDF document text
  • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/hjcpu93bnqlsfo9o05s0hvok72/84466963927.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=fisica+conceptual+paul+hewitt+pdf+10+edicionPDF 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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