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
• 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.
• Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://mukaperu.weebly.com/uploads/1/3/4/6/134649449/cc9a5f8a64.pdf.
• 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://inwebjor.ru/pbw?utm_term=insta3d+-+create+your+own+3d+avatar+apk PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4413850/normal_6056af751c426.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4501233/normal_600db2ba0ccec.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4445114/normal_5fedab8552661.pdfIn PDF document text
  • https://mukaperu.weebly.com/uploads/1/3/4/6/134649449/cc9a5f8a64.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4411273/normal_6047f11d122a0.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4453142/normal_5ffe4aea80d7d.pdfIn PDF document text
  • https://forabuluzasojar.weebly.com/uploads/1/3/5/3/135303956/3129406.pdfIn PDF document text
  • https://bogonifad.weebly.com/uploads/1/3/4/1/134108647/a6a16be2a2.pdfIn PDF document text
  • https://wupibivuvofat.weebly.com/uploads/1/3/1/1/131164023/tisomore.pdfIn PDF document text
  • https://poxovoxi.weebly.com/uploads/1/3/5/3/135398301/497299.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379371/normal_600a292590942.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/6764720e-b6e4-4389-a192-1d2a29eace8a/99450674978.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6974d2e2-ef73-4f91-9ec7-debdc3e35e95/80189482153.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e73fa500-259f-425f-b20f-1a8cc5d2395e/how_long_to_get_driver_license_in_mail.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6a8b4ffe-d5d0-40bc-b7ab-8ba2d46ea3d8/grachi_capitulo_1_completo_primera_temporada_en_espaol_latino.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0a22416d-2b11-4d6a-b34b-beabf59eb88f/lugepovapepizapid.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/163a10c0-1471-40e7-9d85-4f6eed7b239a/batch_file_cmd_window_stay_open.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7d837289-5ded-4717-bd8a-df6bc18486eb/how_do_i_change_the_battery_in_my_acurite_thermometer.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
  • https://uploads.strikinglycdn.com/fIn macro / runtime command snippet
  • http://scripts.sil.org/OFLIn PDF document text

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