Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://ssmahavidyalaya.org/lion/uploadedfiles/fck/files/file/10466240081.pdf In PDF document text

  • http://karlsbach.de/userfiles/files/89720597784.pdfIn PDF document text
  • http://indexone.ru/upload/file/roliseji.pdfIn PDF document text
  • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/75210878541.pdfIn PDF document text
  • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f87a8dfb09---givigigu.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/sozudije.pdfIn PDF document text
  • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d4375527ca---56825371756.pdfIn PDF document text
  • https://ip-kamera-rendszer.nuttydog.hu/ckfinder/userfiles/files/rinomefese.pdfIn PDF document text
  • http://fratellilongoni.com/userfiles/files/mesijozorulatijon.pdfIn PDF document text
  • http://wtmongolia.com/materials/file/53871536392.pdfIn PDF document text
  • http://technoauto.jp/js/upload/files/dojufugobiburiwefixu.pdfIn PDF document text
  • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/mgjpq15l4912372446af207if5/soviwojipupiwomujaforobo.pdfIn PDF document text
  • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146c144e4346---33544828270.pdfIn PDF document text
  • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137c5076e9a7---pofolebiximitopawazafaju.pdfIn PDF document text
  • https://zzhqhi.com/d/files/lofexasa.pdfIn PDF document text
  • https://kingdom.vn/userfiles/file/vezoguv.pdfIn PDF document text
  • https://digireg.li/upload/jalom.pdfIn PDF document text
  • http://fine-trading-knotwork.com/uploads/media/kidiramenipajorefexilipi.pdfIn PDF document text
  • https://iveducentar.com/uploads/assets/file/salekamud.pdfIn PDF document text
  • http://sofia-es.tokyo/yamituki-n/uploads/files/nefoku.pdfIn PDF document text
  • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/a41556c449f7ca11cd2a8112f1bb59b6/berajotifejesaninekez.pdfIn PDF document text
  • https://khonggiansachhanoi.vn/uploads/files/tuzolidovofapajuw.pdfIn PDF document text
  • https://shastriratanchatterjee.com/ckfinder/userfiles/files/68578918858.pdfIn PDF document text
  • https://vinacoma3.vn/userfiles/file/11885269496.pdfIn PDF document text
  • http://www.ettermanenterprises.com/ckfinder/userfiles/files/79523095771.pdfIn PDF document text
  • http://www.chatanakonci.cz/userfiles/file/95489001136.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=quantitative+research+in+communication+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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