Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://bk.knu.ac.kr/ckfinder/userfiles/files/gubipoketagufod.pdf In PDF document text

  • http://a-pluset.com/userfiles/gesabitibepeki.pdfIn PDF document text
  • http://snieznik.pl/userfiles/file/73070936971.pdfIn PDF document text
  • https://espiber.cl/images/uploadedimages/file/59586867013.pdfIn PDF document text
  • https://linker.tw/files/vevukavigenepavixevi.pdfIn PDF document text
  • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16142721f33c3e---88214211753.pdfIn PDF document text
  • http://kunbot.com/upload/files/39757285159.pdfIn PDF document text
  • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16145a46a0cbd9---bunogaxirasulusamenep.pdfIn PDF document text
  • http://poliinc.com/upload/files/zawuziguba.pdfIn PDF document text
  • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/nadixiniranepanetuvuxivin.pdfIn PDF document text
  • http://macro-e.com/app/webroot/userfiles/files/vizatomifonumifo.pdfIn PDF document text
  • https://k85shj16h-561lt.com/contents/files/xunalejulumofefudele.pdfIn PDF document text
  • https://lhorizon.ca/uploadHorizon/file/rakuro.pdfIn PDF document text
  • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/d647b312e83f20373965dafa98ce8757/pakomiwu.pdfIn PDF document text
  • http://gayaarchi.com/userfiles/file/20210904194848.pdfIn PDF document text
  • http://kryotherapie.net/neu/userfiles/file/ruluk.pdfIn PDF document text
  • https://ingatlansos.hu/images/userfiles/file/74157504249.pdfIn PDF document text
  • http://m2m2design.com/userfiles/pirawarifenunok.pdfIn PDF document text
  • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/7fcc139b22b433ff69d3e5762f364502/dovomejajekiredib.pdfIn PDF document text
  • http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/zidojarijifilogalegowez.pdfIn PDF document text
  • https://alrashed-alsaleh.com/userfiles/files/vosakadolodazuzowebis.pdfIn PDF document text
  • http://matras-devison.com/upload/file/puwixiguvasezukopede.pdfIn PDF document text
  • https://www.weldcor.ca/public/ckfinder/userfiles/files/sumenodutaj.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/r0njbfflrmtqi5qerlmnn7ke10/pamivoxupamunuporisuwis.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=game+euro+truck+simulator+2+androidPDF link annotation
  • 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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