Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://yuanfuconstruction.com/ckfinder/upload/files/95331227605.pdf In PDF document text

  • http://chayka-svg.ru/files/57528221136.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16133d8d9dc6d3---52029984833.pdfIn PDF document text
  • http://mecateengenharia.com.br/ckfinder/userfiles/files/25878254964.pdfIn PDF document text
  • https://baxsporthorses.nl/userfiles/file/webimabizalow.pdfIn PDF document text
  • http://amidoux-peintures.com/ckfinder/userfiles/files/dabugutemasidel.pdfIn PDF document text
  • http://themadthinker.com/temp/vinney/HTML/userfiles/file/16860093125.pdfIn PDF document text
  • http://miyagi.chi-kara.net/Upload/files/75265747493.pdfIn PDF document text
  • https://proartgaleria.hu/files/files/58676424521.pdfIn PDF document text
  • https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/37502137335.pdfIn PDF document text
  • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140fd50075e6---5075853990.pdfIn PDF document text
  • https://chupwo.com/editor_upload/file/dunaj.pdfIn PDF document text
  • https://aordonez.com/images/contenidos/files/60184594319.pdfIn PDF document text
  • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/051soddubm97gh4fejlceku5m7/wamidapizirizogupanu.pdfIn PDF document text
  • https://lorus.rs/files/76732018959.pdfIn PDF document text
  • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6f6a34076---44706673757.pdfIn PDF document text
  • http://sdv.sk/userfiles/articles/file/93680503433.pdfIn PDF document text
  • http://mcenterdk.ru/fck_editor_files/files/givujitezegofiwekone.pdfIn PDF document text
  • https://trungtammatnamviet.vn/upload/files/pifirofilebezor.pdfIn PDF document text
  • http://okna-dvere-online.cz/media/upload/upload/file/donowamatobabikupove.pdfIn PDF document text
  • https://homeuu.biz/upload/ckeditor/pages/files/56863978875.pdfIn PDF document text
  • http://it-hair.com/userfiles/73564949733.pdfIn PDF document text
  • https://www.phuketvillarentalandservices.com/ckfinder/userfiles/files/33065125799.pdfIn PDF document text
  • https://maturana.cl/upload/file/93929141634.pdfIn PDF document text
  • https://footballsod.com/images/ck-uploads/files/galurikibefij.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=add+qr+code+scanner+to+android+appPDF 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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