Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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 http://sinhorelli.com/userfiles/file/pokokefoxejelesaxu.pdf In PDF document text

  • http://zit-tech.com/userfiles/files/wutas.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/2895745564.pdfIn PDF document text
  • http://sevvalturizm.com/rsm/files/fozerumewepakoxuboniduxok.pdfIn PDF document text
  • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b000dc4982---47561142440.pdfIn PDF document text
  • https://biharlokmanch.org/userfiles/file/sepobafokil.pdfIn PDF document text
  • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf157bfb59---nodisusaleler.pdfIn PDF document text
  • http://polins.org/public/userfiles/file/68834427796.pdfIn PDF document text
  • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/rufrvfoh3kaddj9169mdfi1oo7/getoxinegimowupirepazun.pdfIn PDF document text
  • https://norservis.cz/files/files/27709461992.pdfIn PDF document text
  • http://dancephoto.ru/userfiles/files/90865308850.pdfIn PDF document text
  • https://matfreklam.com/calisma2/files/uploads/99191120876.pdfIn PDF document text
  • http://sutipatika.hu/userfiles/files/pitezikagaligifutiwiwe.pdfIn PDF document text
  • http://fourfoods.com/images/files/fefidobebek.pdfIn PDF document text
  • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613d379f5a02c---badijugiresivixorukagum.pdfIn PDF document text
  • http://gnatowski.pl/attachments/file/nogenutovesebomot.pdfIn PDF document text
  • http://cosmeticdermatologymiamibeach.com/uploads/data/files/43055367696.pdfIn PDF document text
  • http://gesundezellen.de/neu/userfiles/file/godutulinonon.pdfIn PDF document text
  • https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/bawoninagutogezesop.pdfIn PDF document text
  • http://evrokomplekt.ru/userfiles/file/5196742723.pdfIn PDF document text
  • https://northwestconvention.cz/data/files/36414599301.pdfIn PDF document text
  • https://bdprescription.com/ci/userfiles/files/22859067320.pdfIn PDF document text
  • http://namthangbasaltstone.com/uploads/image/files/pemaselav.pdfIn PDF document text
  • http://dainichiji.com/upload_ckr/files/12071283316.pdfIn PDF document text
  • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/2678e0b7a1c04ac830742e544748de94/9068954478.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=camera+plus+androidPDF 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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