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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://smidgel.ru/uplcv?utm_term=12th+science+biology+book+pdf+download PDF link annotation

  • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/9ea3f11b53e76118ad8bf963e449f819/limutidodifamufebugoduse.pdfIn PDF document text
  • http://lookkorea.net/userfiles/file/fupemezijebulaxuda.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb802d3d81---49708320378.pdfIn PDF document text
  • http://geose.ru/userfiles/file/9978821206.pdfIn PDF document text
  • http://mazdooradda.com/userfiles/file/mizobez.pdfIn PDF document text
  • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607054ed371e1---najefewebenapukoxewomakel.pdfIn PDF document text
  • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/ff9236ecf57be0a2a92b25ea17ea1a74/xojamebegiwesezebixedaj.pdfIn PDF document text
  • https://binarbaidtrading.com/public_html/userfiles/file/giroginaxiwederijufipex.pdfIn PDF document text
  • http://nguoigiupviec99.com/webroot/img/files/givamerotopamuduxa.pdfIn PDF document text
  • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607602e8104d4---vorep.pdfIn PDF document text
  • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fff271be70---movir.pdfIn PDF document text
  • http://usmleworkout.com/files/file/vedegigajofiwi.pdfIn PDF document text
  • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/0482ec2c72dcb54fe8f6ffd7dae58b2f/4982121443.pdfIn PDF document text
  • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/e7460a91a06c10f0b1030ae4757f42d9/tutagelitudulozo.pdfIn PDF document text
  • http://yuha.be/_files/file/kamutezuposugoka.pdfIn PDF document text
  • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/4ded9b62c8163f6debc6aac28a205e68/15058449635.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://fedorahosted.org/lohitIn 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://scripts.sil.org/OFLIn PDF document text

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