Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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/strik?utm_term=gas+ft3+to+m3 PDF link annotation

  • https://static.s123-cdn-static.com/uploads/4491705/normal_5ff30df243b6c.pdfIn PDF document text
  • http://pekefosijemibi.sportsontheweb.net/gadevebaketemolijazazupa.pdfIn PDF document text
  • https://rajotabew.weebly.com/uploads/1/3/4/3/134360909/2075182.pdfIn PDF document text
  • http://worameruvejaka.mywebcommunity.org/anemia_makrositik_adalah.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4455207/normal_5ffc227592b80.pdfIn PDF document text
  • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/c246389fe9b4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4464077/normal_5fe617d765181.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4444623/normal_6000f677dc15a.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/79a4c72d-d61c-49a1-9efb-41036dfb29f9/my_utmost_for_his_highest_devotional_for_today.pdfIn PDF document text
  • http://tafiwepamubov.atwebpages.com/antihistaminicos_clasificacion.pdfIn PDF document text
  • https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_432a9c37722e40d7914db816694a3bea.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/e62d5df2-99a9-4c5f-ae34-eff37db67c2e/what_business_can_i_do_with_100k.pdfIn PDF document text
  • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_be1875b7947e4e2db43f47320fcc9f8f.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/04938e7c-7a33-4754-8d66-f5e4fe2dfc1b/cozi_tv_new_schedule_january_2020.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/087ae9e1-a64e-4b44-8727-4eb1a0671047/60943039030.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a6d61902-47c2-4189-b4c9-aa8e6fcd6105/why_is_my_wireless_keyboard_not_connecting_to_my_mac.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/52ff315a-e0e1-4063-a8a1-23d8c38f02f0/how_to_measure_a_washer_and_dryer.pdfIn PDF document text
  • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_c6f3a8264c004f55a5d98e683880e35d.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/f0dc52cb-9763-46ee-9ff5-a5e4a4351ad9/22411516909.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/92f67afa-ecbd-45f5-b7fc-fa42e48008e3/multimetro_cen_tech_p37772_precio.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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