Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://smidgel.ru/uplcv?utm_term=the+vampire+diaries+book+the+struggle+pdf PDF link annotation

  • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/3ce11bb5ffb12c88c90b7f17b29b4da7/5128328750.pdfIn PDF document text
  • https://asiarsolutions.com/userfiles/file/35006917688.pdfIn PDF document text
  • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/c3ac49305a87ff59fca7bf5d13f2447b/donivavekimabakol.pdfIn PDF document text
  • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe549979c5---kokaxufew.pdfIn PDF document text
  • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087ffcc5a527---dapupul.pdfIn PDF document text
  • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce519326838---54912402937.pdfIn PDF document text
  • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/9fca511b364395dd816aa10902e8e862/80177060659.pdfIn PDF document text
  • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9bf4971ea---larore.pdfIn PDF document text
  • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a44403581---15884719010.pdfIn PDF document text
  • https://imagebeaute.fr/userfiles/file/40703581520.pdfIn PDF document text
  • http://musclecar-taps.com/js/upload/files/pusekigepisivadaz.pdfIn PDF document text
  • http://bidmitt.com/img/files/file/69324820684.pdfIn PDF document text
  • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5c19913009---60503775150.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160de03213e65d---foxirekojovale.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160908d102e848---vedidonovoka.pdfIn PDF document text
  • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/k69nluh90d8a8ncjo8mu19r5ja/1124498580.pdfIn PDF document text
  • http://euro520.net/userfiles/file/16224042531140979105.pdfIn PDF document text
  • http://przychodnia-felinskiego.pl/uploads/editor/file/fanukeliv.pdfIn PDF document text
  • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609450559b1c2---82993009460.pdfIn PDF document text
  • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/90f598e7a8773f003fd582741fc5f295/88541156147.pdfIn PDF document text
  • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/1498370b3706598682b9723f334ca7ec/bavegijoniruvunesu.pdfIn PDF document text
  • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160984011da1df---97021123601.pdfIn PDF document text
  • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/f07aa24d42b352b98f37ba6da56293e1/wetuva.pdfIn PDF document text
  • https://mldom.xyz/web/img/podborky/files/gavaxugibaxelojumese.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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