Malicious PDF — malware analysis report

Heuristics 7

• 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
• 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.willmarshelter.com/ckfinder/userfiles/files/23202276161.pdf In PDF document text

  • http://jr.ac.th/ckfinder/userfiles/files/jovalowevure.pdfIn PDF document text
  • https://thuaphatlaihoanghuy.com/uploads/files/9009805774.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615d8288072b2---zobunumugopunadutanetev.pdfIn PDF document text
  • http://jinruily.com/UploadFile/file/20210910175906173.pdfIn PDF document text
  • http://hongshengfish.com/uploadfiles/20211004/21100408171436888405g23ne6gv67.pdfIn PDF document text
  • http://abimobiliare.pl/pliki/File/5366680368.pdfIn PDF document text
  • http://pneusmarene.it/images/file/45619887619.pdfIn PDF document text
  • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/be083a972b09fae4e4be21c690449114/26835182025.pdfIn PDF document text
  • http://matkinhantai.com/luutru/files/72964247042.pdfIn PDF document text
  • https://nbc.com.vn/ckfinder/userfiles/files/81419126474.pdfIn PDF document text
  • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/0048b933e83022c4addabb07b7a485cd/duzazojiwilajuranukatepeb.pdfIn PDF document text
  • https://nenmongdangquang.com/upload/files/vuwugo.pdfIn PDF document text
  • https://nk-sostanj.si/files/file/5212297076.pdfIn PDF document text
  • http://ff-engineering.com/userfiles/files/85670505480.pdfIn PDF document text
  • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff66669599---20718524591.pdfIn PDF document text
  • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/27232241237.pdfIn PDF document text
  • https://vinadesigndanang.vn/uploads/image/files/nowutumone.pdfIn PDF document text
  • http://logopeda-empatia.pl/content/file/felibefodakutogote.pdfIn PDF document text
  • https://svetplus.com/userfiles/files/12209692387.pdfIn PDF document text
  • https://artasedanasingaraja.com/uploadfck/file/semanikuxu.pdfIn PDF document text
  • http://fecoil.com/userfiles/file/82345055223.pdfIn PDF document text
  • http://nhatrangpalacehotel.com/app/webroot/upload/files/palipaguverubufu.pdfIn PDF document text
  • http://feedproxy.google.com/~r/Xvkpad/~3/u-9XGpgKpwY/uplcv?utm_term=meaning+of+ankle+chainPDF 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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