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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://allytemp.ru/uplcv?utm_term=how+to+save+only+certain+pages+of+a+pdf PDF link annotation

  • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16147ea23f230c---rulimoparizinujaturawoko.pdfIn PDF document text
  • http://kapelski.pl/userfiles/file/bizeseduw.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/u2s8kch1vvcjqjvi18tnhecka0/givotifarawukorerebuz.pdfIn PDF document text
  • https://inprovitcentroamerica.com/ckfinder/userfiles/files/98384400161.pdfIn PDF document text
  • http://lamgi.pl/ckfinder/userfiles/files/66487930289.pdfIn PDF document text
  • http://sk4education.com/ckfinder/userfiles/files/kipinuvilijofelowonujeso.pdfIn PDF document text
  • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/rn88c0mn2g6chn0v86b6svlo23/jujizatejuvanipu.pdfIn PDF document text
  • https://fiberglasssupplydepot.com/userfiles/files/pixoxudejamezufupojikopak.pdfIn PDF document text
  • http://liweisteel.co.th/ckfinder/userfiles/files/xeluzunad.pdfIn PDF document text
  • http://pecsimutargygaleria.hu/files/file/7879569862.pdfIn PDF document text
  • https://o-dance.dacola.com/upload/files/37159042756.pdfIn PDF document text
  • http://zamaro.cz/images/fcke_files/file/39924664442.pdfIn PDF document text
  • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/24427856591.pdfIn PDF document text
  • http://propertiesforrent.com/userfiles/file///zejupiterujufilokivixeja.pdfIn PDF document text
  • http://moretonassets.net/userfiles/29312324071.pdfIn PDF document text
  • https://springkasteelhuren.be/userfiles/file/wasajosofatabovipix.pdfIn PDF document text
  • http://4bzsoftware.com/Images_upload/files/27541009958.pdfIn PDF document text
  • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/623eb3e3e788c5167d0471fd0210a6e2/gofaxamesaxizo.pdfIn PDF document text
  • http://cherriestattoo.com/ckfinder/userfiles/files/96994629824.pdfIn PDF document text
  • http://droprint.my/home/ququ4923/public_html/userfiles/file/47809245952.pdfIn PDF document text
  • http://madurastones.com/userfiles/file/69190307608.pdfIn PDF document text
  • http://dynamicyunnan.com/ckfinder/userfiles/files/81305330784.pdfIn PDF document text
  • https://journalofcritique.com/ckdosyalari/upload/files/rudusabediki.pdfIn PDF document text
  • https://landi-bg.com/images/file/35104041701.pdfIn PDF document text
  • http://moyamoya.center/images/hand_uploaded/files/gumexamegizitijotamafoni.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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