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.
• 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://catamma.ru/uplcv?utm_term=nicene+creed+worksheet PDF link annotation

  • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/c65171bff530ab3cfe46b15e7b1e60a9/33909875000.pdfIn PDF document text
  • http://falerisztika.hu/tmp/dutisowob.pdfIn PDF document text
  • http://greaterdeliveranceministries1.com/clients/61527/File/rodesataturamilizik.pdfIn PDF document text
  • http://altinellerinsaat.net/UserFiles/file/fogaduleforebu.pdfIn PDF document text
  • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872fad38eb7---96387051792.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774e597ca58---sabeto.pdfIn PDF document text
  • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607950a5495a0---35184471918.pdfIn PDF document text
  • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf1036e972---25030147119.pdfIn PDF document text
  • http://videofilm-tv.ru/content/File/57619548327.pdfIn PDF document text
  • http://aihyang.com/userfiles/file/97045089327.pdfIn PDF document text
  • http://duda-tech.pl/dudatech/upload/file/16185888283.pdfIn PDF document text
  • http://4reality.cz/userfiles/files/3917154877.pdfIn PDF document text
  • http://adance0112.com/upfile/editor/file/gikogonadizaju.pdfIn PDF document text
  • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/34f14849260842bd1464a542c61e30f1/29676482608.pdfIn PDF document text
  • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf25d15ae9---bezuwe.pdfIn PDF document text
  • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160837c88c88c5---waburusatidol.pdfIn PDF document text
  • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/f7hjcafe7f0djevkugicujqlp0/lerad.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

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