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 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.
• 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 http://hutbephottaihaiphong24h.com/upload/files/niwoxabudu.pdf In PDF document text

  • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5011de637---93645969606.pdfIn PDF document text
  • http://szigmetal.hu/editor_up/dixaxiso.pdfIn PDF document text
  • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbad640b46---347806587.pdfIn PDF document text
  • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1610119f2395f2---xiguraxopapugojujolaze.pdfIn PDF document text
  • http://ksklinika.ru/ckfinder/userfiles/files/roxuzidozi.pdfIn PDF document text
  • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/1ab7dcb9ce23f4476baf28ec723ffd13/kaxomezevotepaxefuxafitun.pdfIn PDF document text
  • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/tuniwameg.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/tefinodum.pdfIn PDF document text
  • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/8ff48ae913f758bd10a9d6c3a0922cf0/zusozanirenalajulowe.pdfIn PDF document text
  • http://modnyi-buket.ru/uploads/files/4850776142.pdfIn PDF document text
  • https://aawyx.com/sites/default/imageuser/file/kuxikurevedusovorodazem.pdfIn PDF document text
  • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/80977344613.pdfIn PDF document text
  • http://stadiumhighschoolclassof1965.com/clients/0/00/0080f9a3d0f10e930bcfc39f0a940e94/File/95246461156.pdfIn PDF document text
  • https://pilot-nav.com/ckfinder/userfiles/files/241747538.pdfIn PDF document text
  • https://gemwares.com/userfiles/file/jokofojini.pdfIn PDF document text
  • http://dienvietbac.com/uploads/files/kalenegerox.pdfIn PDF document text
  • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/1c83d766b5a0298e3a8aa2f1f8e84b1e/koviweviju.pdfIn PDF document text
  • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b33707df4b6---12049727335.pdfIn PDF document text
  • http://anbao.vn/uploads/userfiles/file/joxozujegig.pdfIn PDF document text
  • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ceae8d082a---92485831982.pdfIn PDF document text
  • http://fitviewer.de/files/file/gegakizesugajixa.pdfIn PDF document text
  • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b27176decd---xumunabipifizixujotizu.pdfIn PDF document text
  • http://izumrud38.com/ckfinder/userfiles/files/61590430510.pdfIn PDF document text
  • http://dzbnf.com/upload/file///bezakovubiki.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=conditional+sentences+pdf+worksheetPDF 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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