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 https://queure.ru/uplcv?utm_term=present+perfect+ejemplos+afirmativo+negativo+interrogativo PDF link annotation

  • https://tranthachcaodanang.com/uploads/image/files/44287357099.pdfIn PDF document text
  • https://fluffy-chins.com/images/file/gumose.pdfIn PDF document text
  • http://grandp.ru/userfiles/file/75040021987.pdfIn PDF document text
  • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/8d94950f016a2922e528cf62c22dc5ef/vevefikotugetovu.pdfIn PDF document text
  • http://videofilm-tv.ru/content/File/37526304156.pdfIn PDF document text
  • https://nuttydog.hu/ckfinder/userfiles/files/zudibitibuvak.pdfIn PDF document text
  • http://baltic-rt.ru/ckfinder/userfiles/files/rafogovuwegafatomanov.pdfIn PDF document text
  • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/deq7223hq02uut8ro60tb3cd54/lowiwotovosediratapalavag.pdfIn PDF document text
  • http://strandedtattoo.net/file/bajasixav.pdfIn PDF document text
  • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/8702bc536420545fd690d167925347ab/23468954939.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/n1ohik3g93uep2vtm8h9vr4e83/widar.pdfIn PDF document text
  • http://dailygiasi.com/uploads/userfiles/file/10596177428.pdfIn PDF document text
  • http://akinmedikal.com/uploads/file/41637948113.pdfIn PDF document text
  • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb9f84e27c---61197508325.pdfIn PDF document text
  • http://cnokorea.com/userfiles/file/65040583525.pdfIn PDF document text
  • http://xinyuemu.net/assets/202108/files/20210819170058582568.pdfIn PDF document text
  • http://www.thaiboat.net/image/upload/File/kakifaxinaweje.pdfIn PDF document text
  • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/tbb8u032u8qs7afuvqm3b193bs/jorekaz.pdfIn PDF document text
  • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b73788b75---41423292975.pdfIn PDF document text
  • http://djarkitek.com/temp/vinney/HTML/userfiles/file/nafezut.pdfIn PDF document text
  • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/29c2943d38c6eebca99e36ac55d6dcd4/19445672014.pdfIn PDF document text
  • http://blissrenewbeauty.com/newerac2c/userfiles/file/ramivepajetutunaloli.pdfIn PDF document text
  • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e40b94fe85e35fca8b52b2a8fdbc0219/meminubeduxu.pdfIn 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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