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.
• 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.
• 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://ponafet.ru/strik?utm_term=why+is+the+supply+curve+of+labor+usually+upward+sloping PDF link annotation

  • https://static.s123-cdn-static.com/uploads/4446151/normal_5fef64d3e20d9.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4497369/normal_600309fb70b95.pdfIn PDF document text
  • http://top-shop-store.website/9855569744738aks.pdfIn PDF document text
  • http://bigpleasure.ru/62417806307secu.pdfIn PDF document text
  • http://businesshelpservice.com/secugen_hamster_plus_biometric_software_freeux93a.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4497369/nIn macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/6aae0943-1b0d-457e-ac58-c5e9f549a852/how_to_find_ip_address_of_my_system_using_cmd.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0698da67-159a-4db1-a55f-18133e33016a/sharp_ht-sb60_blinking_red_light.pdfIn macro / runtime command snippet
  • https://uploads.strikinglycdn.com/files/08bf7e2e-aebf-4c35-9bdd-a5d7a83f2d97/79869925184.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f05f3039-f70d-4e8b-b7cd-1e26db73d24e/vejumewudusovavojakizex.pdfIn PDF document text
  • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_146e66fb4eba4248876c3bd11fa190ab.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/55454d0c-835e-4c3e-a0b9-b43fb7d59dee/mifinusoviwuluwivu.pdfIn PDF document text
  • https://s3.amazonaws.com/ravuxudibure/bahrain_evisa_application_form.pdfIn PDF document text
  • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_11359977a15f40fe90d706e6f567ed56.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/2ed0cf47-6977-4fb5-906b-487fba34c9dc/tozisadubewe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cae59985-e2df-4684-a648-769142b1c205/10168809919.pdfIn PDF document text
  • https://e18e6c05-101e-4f41-9c4d-f518aea09dbb.filesusr.com/ugd/7972b3_3fb8b2daefd649c7a69a96c5ecd86896.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/nijudow/interval_timer_app_android.pdfIn PDF document text
  • https://s3.amazonaws.com/juzowilipi/72669521874.pdfIn PDF document text
  • https://s3.amazonaws.com/dinisemowoge/45030925558.pdfIn PDF document text
  • https://s3.amazonaws.com/jaloto/nemiwamajekusejelik.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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