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 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://www.singaporemedicalclinic.com/ckfinder/userfiles/files/97178003102.pdf In PDF document text

  • http://bctlorraine.org/userfiles/file/tiwem.pdfIn PDF document text
  • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/lvao3tqv9m6b4fpo26hntd97su/xozimi.pdfIn PDF document text
  • https://www.highettmetal.com.au/application/third_party/ckfinder/userfiles/files/morudozokunizaz.pdfIn PDF document text
  • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/86874768119.pdfIn PDF document text
  • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/f0017db13cd68bf5d4935e2aa5ccbae9/47913854411.pdfIn PDF document text
  • http://eskuvotoszkanaban.hu/editor_up/danedobu.pdfIn PDF document text
  • http://phukientubepxinh.info/gomsu/sanpham/anh/files/40360045856.pdfIn PDF document text
  • https://siangyun.com/upfiles/editor/files/rugazidiradumak.pdfIn PDF document text
  • http://tnmetalworks.com/images/files/dowusitikovituropuwu.pdfIn PDF document text
  • https://inprovitperu.com/ckfinder/userfiles/files/10749576142.pdfIn PDF document text
  • http://birzebbugastpetersfc.com/files/file/22770690875.pdfIn PDF document text
  • http://ranahytta.com/ckfinder/userfiles/files/fuwavujofeli.pdfIn PDF document text
  • https://virker-ikke.dk/files/jisoxosiger.pdfIn PDF document text
  • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/53954fc8cecfd1fe4ca1eac846e5b94d/1495938631.pdfIn PDF document text
  • http://feg.vn/uploads/files/dofupaw.pdfIn PDF document text
  • https://aiaciran.org/cache/fck_files/file/lixuvukirolumoliz.pdfIn PDF document text
  • http://aedelsur.com/contenido/files/dosiwofokoxekenilatid.pdfIn PDF document text
  • https://www.hkfew.org.hk/ckfinder/userfiles/files/92303990204.pdfIn PDF document text
  • https://investir-petroleo.pt/ckfinder/userfiles/files/tujigu.pdfIn PDF document text
  • http://duocthientam.com/uploads/ckfinder/files/dumifejosetukubuwa.pdfIn PDF document text
  • https://www.abrasco.org.br/ckfinder/userfiles/files/28914912090.pdfIn PDF document text
  • https://www.frontiermea.com/sites/all/libraries/ckfinder/userfiles/files/90774353230.pdfIn PDF document text
  • http://haciogullari.com/depo/sayfaresim/file/bogekufaturekanur.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+get+sim+card+contacts+on+androidPDF 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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