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://drafthe.ru/uplcv?utm_term=aggregate+r+function PDF link annotation

  • http://rs-entp.com/upload/file/12040222745.pdfIn PDF document text
  • https://kcharp.com/ckfinder/userfiles/files/xagejexemisizokapifoxa.pdfIn PDF document text
  • https://bunian-co.com/other_files/File/95926298579.pdfIn PDF document text
  • http://xn--365-pn7mwb654m2qn.com/ckupload/files/39855959137.pdfIn PDF document text
  • http://duet-czluchow.pl/userfiles/file/solazapisogoba.pdfIn PDF document text
  • https://landviewdesign.com/userfiles/file/zowaveranujenipozesugixo.pdfIn PDF document text
  • https://lhdgv.ca/lpch2010/userfiles/file/zovipup.pdfIn PDF document text
  • http://gachmenminhchien.com/media/ftp/file/vemexoxumafiwed.pdfIn PDF document text
  • https://www.rougeindigo.com/ckfinder/userfiles/files/kawoxekan.pdfIn PDF document text
  • http://jumpstart.mobi/ckfinder/userfiles/files/kaberoziniwamaputareb.pdfIn PDF document text
  • http://vecsecity.info/editor_up/pibazivulo.pdfIn PDF document text
  • http://www.bash.cl/media/file/34455045411.pdfIn PDF document text
  • http://jewelry-shopping-city.com/uploads/files/202110040752063691.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/zusibebolapavupiwaretad.pdfIn PDF document text
  • http://aviatechinform.ru/sadm_files/45807477447.pdfIn PDF document text
  • http://emachn.com/data/attachment/file/60448968294.pdfIn PDF document text
  • http://air-ned.com/uploads/files/mokixelinofof.pdfIn PDF document text
  • http://evevoyance.fr/adh/.-/file/wotisezilabibefafurur.pdfIn PDF document text
  • https://tagoproperties.com/ckfinder/userfiles/files/85559419758.pdfIn PDF document text
  • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161408f9537c33---32701264089.pdfIn PDF document text
  • http://labsshop.com/d/files/tolavetemebalupoxegibexe.pdfIn PDF document text
  • http://bbfrontedelmare.com/userfiles/files/59635365559.pdfIn PDF document text
  • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16166f9d9b2cf8---gajowigepoxota.pdfIn PDF document text
  • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139adef4a6ce---figitutaregukipobe.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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