Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://inwebjor.ru/uplcv?utm_term=what+does+it+mean+to+plead+the+fifth PDF link annotation

  • http://obkladacstvikolar.com/content/19914060785.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/rofigelogope.pdfIn PDF document text
  • http://irs-messtechnik.at/upload/23892213430.pdfIn PDF document text
  • https://people11people.com/uploads/File/gitigizututud.pdfIn PDF document text
  • https://houstoncoinclub.org/FCKeditor/file/23172291605.pdfIn PDF document text
  • https://interstudy.net/userfiles/file/pemoge.pdfIn PDF document text
  • http://fra2ange.it/userfiles/files/21998106235.pdfIn PDF document text
  • https://szaniterplaza.hu/ckfinder/userfiles/files/70043134628.pdfIn PDF document text
  • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/9f8ed21ef1ccfc8f5cb977fc132453b4/nurunefo.pdfIn PDF document text
  • http://sendedianqi.com/upload_fck/file/2021-9-23/20210923010212236908.pdfIn PDF document text
  • http://veterinariacasettamattei.it/userfiles/files/95152478853.pdfIn PDF document text
  • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/1a314501db770e915cdf91325427ac43/5194869407.pdfIn PDF document text
  • http://potentialdesign.cn/userfiles/file/1631961945.pdfIn PDF document text
  • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/4056642f534a3799ee00e1b12976b4e2/rivatoxiwo.pdfIn PDF document text
  • https://temporar.mirceaseminee.ro/printuri-fi/files/diguvexekevujaxav.pdfIn PDF document text
  • https://0955205219.jwa.tw/userfiles/files/pokemepabilugajixoguw.pdfIn PDF document text
  • https://bio86.net/userfiles/fichiers/76802626651.pdfIn PDF document text
  • https://rivieresoceanie.com/ckfinder/userfiles/files/80053697542.pdfIn PDF document text
  • http://www.clc-engineering.com/siteuploads/editorimg/file/11117909555.pdfIn PDF document text
  • http://interel-rus.ru/test/sites/default/files/file/75564947741.pdfIn PDF document text
  • http://achwvs.love-mrt.com/upload/files/ravetatokenisupumu.pdfIn PDF document text
  • https://avigailpekelman.com/sites/default/files/file/zupovoduvagux.pdfIn PDF document text
  • http://ofitecnic.es/files.ofitecnic/fck_up/file/81012828773.pdfIn PDF document text
  • https://www.rt9.rspo.org/ckfinder/userfiles/files/patefobivomirusuzisat.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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