Malicious PDF — malware analysis report

Heuristics 10

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Fake CAPTCHA with command-running instructions critical SE_FAKE_CAPTCHA_CLICKFIX
  Document combines fake CAPTCHA or human-verification language with instructions to paste or run a command — a high-confidence ClickFix pattern
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
  Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://jacksth.ru/aws?utm_term=arby%2527s+large+curly+fries+nutrition+facts PDF link annotation

  • https://cdn.sqhk.co/rijomawonuj/61RiaVm/business_management_and_administration_jobs_list.pdfIn PDF document text
  • https://cdn.sqhk.co/xizefonuma/ijQjbDk/nesakatuvasor.pdfIn PDF document text
  • http://mosoxiliraf.iblogger.org/rogiselawifefid.pdfIn PDF document text
  • http://ita-women.space/varitinurabural8a2.pdfIn PDF document text
  • https://cdn.sqhk.co/bozadukopufu/diahi0T/ff_nickname_generator_pro_apk.pdfIn PDF document text
  • https://cdn.sqhk.co/lenawemijixe/iguhfii/suvusibixiki.pdfIn PDF document text
  • https://cdn.sqhk.co/xuzuvazol/iVlkhdK/75522676745.pdfIn PDF document text
  • http://maretexojud.66ghz.com/amato_warranty_forever_reviews.pdfIn PDF document text
  • http://yourbigdick.space/flyff_fast_leveling_guider9uzd.pdfIn PDF document text
  • https://cdn.sqhk.co/zifixanuk/ejiuqhi/furogeda.pdfIn PDF document text
  • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/xegopekewudojarifu.pdfIn PDF document text
  • https://cdn.sqhk.co/pejinijew/MhjhdEG/descargar_geometry_dash_meltdown_para_pc_mega.pdfIn PDF document text
  • https://cdn.sqhk.co/rijomawonuj/In macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://gemimixobisuju.epizy.com/31003053157.pdfIn macro / runtime command snippet
  • http://niruvizuzeta.epizy.com/65495954335.pdfIn macro / runtime command snippet
  • http://pifazudiso.rf.gd/milodajiwexeneji.pdfIn PDF document text
  • http://kijaripejugap.epizy.com/the_story_of_my_life_casanova.pdfIn PDF document text
  • http://fuzaxovojige.epizy.com/digij.pdfIn PDF document text
  • http://robowogutalopet.epizy.com/xunedekudekobesiduri.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://scripts.sil.org/OFLIn PDF document text

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