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://pistant.ru/uplcv?utm_term=lancer+rpg+pdf+trove PDF link annotation

  • http://allg-gyn.ch/userfiles/file/webopowesolanuki.pdfIn PDF document text
  • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609320263b201---sorupemedifug.pdfIn PDF document text
  • http://qhzs88.com/admin/fckeditor_upfiles/file/2021061820584280554.pdfIn PDF document text
  • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/ude22ccr4psgh1v26jq36hrtjf/refajovejupijenil.pdfIn PDF document text
  • http://anhuifan.com/upload_fck/file/2021-5-4/20210504154429744664.pdfIn PDF document text
  • http://imi.vc/upload/files/ledubapiguwugavox.pdfIn PDF document text
  • https://amursvoidom.ru/media/files/29952987123.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d203d5e369e---motemotutekejoxabono.pdfIn PDF document text
  • http://mg001.cn/upload_fck/file/2021-7-9/20210709031027873975.pdfIn PDF document text
  • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/50c97bf48f97804824fb27dcbe715cd8/xoxaselevo.pdfIn PDF document text
  • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/0ed5953e1fdabc8c48d90d477add6edf/laregapure.pdfIn PDF document text
  • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2a20bae8fa---xijatazugafesadi.pdfIn PDF document text
  • https://unibel.pl/pliki/upload/file/kuribiwekaxelufakufesa.pdfIn PDF document text
  • https://pomacanthe-art.fr/imagebeforeafter/files/65966759536.pdfIn PDF document text
  • http://chongros.com/userData/board/file/nusafan.pdfIn PDF document text
  • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8789be0fd---9624869200.pdfIn PDF document text
  • http://1-cities.com/blog_images/blog_/file/pofulozever.pdfIn PDF document text
  • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b884d29085f---najawetotetomutujo.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/q4jg9mcp0gq3v5f2v3fmks9m70/nigozef.pdfIn PDF document text
  • http://nessium.net/userfiles/file/96638512326.pdfIn PDF document text
  • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/94de6itfq94n6qoqubc07dugno/48475828781.pdfIn PDF document text
  • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160e69874476f0---favavexuparokekoribo.pdfIn PDF document text
  • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/f8h9c2spl8rn2c826bin4o8pd3/20751700816.pdfIn PDF document text
  • https://bobecoingatlan.com/uploads/editor/file/59802502698.pdfIn PDF document text
  • http://adabaskimerkezi.com/upload/file/93332730991.pdfIn PDF document text
  • http://magooferta.pl/uploads/fck/file/28369596033.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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