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
• 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.
• 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.
• 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://maypoin.ru/award?keyword=geometric+design+of+highway+pdf+download PDF link annotation

  • http://how2clever.com/joseph_campbell_heros_journey_steps_explained7dsgj.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4495251/normal_5fe2de0b44f62.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376120/normal_600ed1b703399.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4444638/normal_5fe84f610a0ab.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4499319/normal_600e9fc118dea.pdfIn PDF document text
  • http://outputqwvk.space/burmese_python_facts_sheet6y1w7.pdfIn PDF document text
  • http://iminn.ru/apk_google_assistant_bahasa_indonesiao75ai.pdfIn PDF document text
  • http://korecos.ru/lojazomutajimowalikidigevzgqec.pdfIn PDF document text
  • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/xeropizuwe/sostanze_aeriforme_sinonimo.pdfIn PDF document text
  • https://s3.amazonaws.com/sefiwegegagu/87059273549.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/71123612-648f-4710-a472-bf0a05713c12/the_paperbag_princess_read_aloud.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/38431025-52b5-45fa-ac50-4aafd3dde5ca/good_icebreaker_questions_for_high_school_students.pdfIn PDF document text
  • https://69868269-04aa-4a0d-8379-1371762fd556.filesusr.com/ugd/d8beff_684c26366e1e4e4898574d640c268271.pdf?index=trueIn PDF document text
  • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_3a9e9be611424bd1b2cc8f9ff2db706f.pdf?index=trueIn PDF document text
  • https://d7b50aa0-fea3-4edc-ba9e-4ed0094b0c60.filesusr.com/ugd/7f614e_4a8379c794a2442e886fde785c368e86.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/0f559f9f-897e-4fd0-a1fa-823aef0a4ba2/importancia_del_control_de_signos_vitales_al_acudir_a_una_vctima.pdfIn PDF document text
  • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_b57d2dc02a1147ceb8fe1cf70eabab5e.pdf?index=trueIn PDF document text
  • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_8241121efd874c2ebabe4a2733b0c084.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/tobobowu/dark_souls_3_secret_ending_guide.pdfIn PDF document text
  • https://f62823ea-e863-4eb7-bd7c-e3bac0139ff1.filesusr.com/ugd/8c639a_52986ea8cc074e70a059b92fb01880e9.pdf?index=trueIn PDF document text
  • https://a5a7f18c-b887-48a0-80cc-3627c14345d5.filesusr.com/ugd/609f59_6d0df2c93f8a4650ba325ee3eb954c90.pdf?index=trueIn 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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