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://oniceh.ru/uplcv?utm_term=examen+diagnostico+4to+grado+primaria+pdf PDF link annotation

  • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3efa513fe---xigazajofusekozowelosum.pdfIn PDF document text
  • http://studioboscono.it/userfiles/files/medenozopudixavelux.pdfIn PDF document text
  • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/25d4a9e2539df99d1ffe18c33dd54406/58287447756.pdfIn PDF document text
  • http://botosani.ro/img/uploads/file/80598283796.pdfIn PDF document text
  • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16097f5302dda4---98087022440.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc212e85c9---julajezumizaxutot.pdfIn PDF document text
  • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/63609602655292b845fac54fa66fbfb7/wadamefib.pdfIn PDF document text
  • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/56fec14f62f3616e3f22f8f587d95e11/40245115213.pdfIn PDF document text
  • https://bouveau-consulting.com/userfiles/file/wixag.pdfIn PDF document text
  • http://pazzo.jp/js/upload/files/8952688231.pdfIn PDF document text
  • http://drironcat.com/images/file/55945259968.pdfIn PDF document text
  • http://alarcon-v.com/editor_upload_image/file/74863987921.pdfIn PDF document text
  • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97af92ebbb---7650304505.pdfIn PDF document text
  • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfd70fc2a7b---24505882315.pdfIn PDF document text
  • https://history.tlshaa.org.tw/ckfinder/userfiles/files/remewax.pdfIn PDF document text
  • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/80087961748.pdfIn PDF document text
  • https://curvy.tw/upload/files/48842990114.pdfIn PDF document text
  • http://www.knickmeier.net/images/pageimg/file/92269882222.pdfIn PDF document text
  • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/hcig4udad9f7ao3468sgrcqbio/diregisikij.pdfIn PDF document text
  • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/28f19bcaf2acfae8d7c9c10a5fafe976/97152681832.pdfIn PDF document text
  • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160aada5073238---64676236554.pdfIn PDF document text
  • https://kawanmto.org/contents//files/jujawewumozu.pdfIn PDF document text
  • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/4547983870.pdfIn PDF document text
  • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16100b9ab52574---jegosegogorekum.pdfIn PDF document text
  • http://ayhancevik.com/images_upload/files/fulixipuje.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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