Malicious PDF — malware analysis report

Heuristics 7

• 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 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://inwebjor.ru/uplcv?utm_term=operaciones+con+monomios+y+polinomios+ejercicios+resueltos+pdf PDF link annotation

  • http://hesexpo.com/img/editor/image/file/mefigumazekaj.pdfIn PDF document text
  • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/13br6h2ppaef00p6kp9a98u5ou/vinopojurigexopunikikugi.pdfIn PDF document text
  • http://jngf.cn/files/file/2211233724.pdfIn PDF document text
  • http://veterinariomauracotti.it/userfiles/files/69056830237.pdfIn PDF document text
  • http://am-assets.com/aom/magnolia/userfiles/file/85331652461.pdfIn PDF document text
  • https://jancsoalapitvany.hu/ckfinder/userfiles/files/jedukakof.pdfIn PDF document text
  • http://urjabatteries.in/userfiles/file/71857322179.pdfIn PDF document text
  • https://ihotel2b.com/upfiles/editor/files/jeruwajixevepapuzose.pdfIn PDF document text
  • http://mbcasc.net/imgs/file/30399651812.pdfIn PDF document text
  • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/82350778243.pdfIn PDF document text
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/f69c4072f5ed50203fbcd884b9cad78d/54563118322.pdfIn PDF document text
  • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/76d57d3b45f55f5d73f208c95b3e1888/bobemijekekefotatuviv.pdfIn PDF document text
  • http://nanoscopy.ru/uploads/files/lorerarubukelufun.pdfIn PDF document text
  • https://dialogueinpraxis.net/files/docs/vejotirugasepure.pdfIn PDF document text
  • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/43d6d7c5cc13dfb35e9507f0c82b3a77/34267580248.pdfIn PDF document text
  • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607521dec65e1---butikola.pdfIn PDF document text
  • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/b70c8137492ee841b519cd2af6dcd96c/90785953558.pdfIn PDF document text
  • https://liur-krd.ru/userfiles/file/nesevirafebimoraliju.pdfIn PDF document text
  • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/74559eb59f3e44d896868ee7d734ebbe/fajufanubum.pdfIn PDF document text
  • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160944b5aeb620---6378620919.pdfIn PDF document text
  • http://formel1vermietung.de/userfiles/file/34636193509.pdfIn PDF document text
  • https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/47061571841.pdfIn PDF document text
  • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad6b05a81---7557862420.pdfIn PDF document text
  • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608a52b0a519a---99313743629.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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