Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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.
• 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://trafficel.ru/123?keyword=itunes+app+on+pc PDF link annotation

  • https://wesujugureju.weebly.com/uploads/1/3/0/8/130874517/4934707.pdfIn PDF document text
  • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/8247317.pdfIn PDF document text
  • https://sazinuje.weebly.com/uploads/1/3/4/5/134588850/mavirililaxov_volazozovojatib_xefofu_bawera.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413226/normal_5f972fbf275bc.pdfIn PDF document text
  • https://wofinomedek.weebly.com/uploads/1/3/4/1/134108675/zituto-litis-jurupu-nanaxavuviga.pdfIn PDF document text
  • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/widejujumekom.pdfIn PDF document text
  • https://dikosunasalimob.weebly.com/uploads/1/3/4/3/134363034/06127ed8b8e0.pdfIn PDF document text
  • https://davijoxo.weebly.com/uploads/1/3/4/3/134357566/rumixut.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368985/normal_5f87bacf50cab.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403415/normal_5f9449be1bbcc.pdfIn PDF document text
  • https://visuxotilan.weebly.com/uploads/1/3/4/5/134593687/suduko.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/paropabaru/zakapikinusava.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/8354/4772/files/luwofeditozazu.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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