Malicious PDF — malware analysis report

Heuristics 6

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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
• 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://ttraff.ru/wix?keyword=getting+to+maybe+pdf+free+download In PDF document text

  • http://pufotes.nycea.org/uploads/1/3/0/8/130814562/pivurulu.pdfIn PDF document text
  • http://files.regeneratecounseling.com/uploads/1/3/0/7/130775361/talodunigokaza-xidexopiri-zixevatenagofok.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://ea124935-8c71-4d04-ace5-045bb6ec4de6.filesusr.com/ugd/74e9cf_b48e39102e784ba0beef0ea3c3435829.pdf?index=trueIn PDF document text
  • https://0e144503-2bca-4334-b81c-02438c8b98be.filesusr.com/ugd/237bf7_773c5fcfec1047179b62c7a997578333.pdf?index=trueIn PDF document text
  • https://a05a2460-12e5-40f8-a65d-54b272c081e7.filesusr.com/ugd/d19ca0_f75772869ace43bda43f54de77d2967f.pdf?index=trueIn PDF document text
  • https://cab38f7d-986e-4e3e-9b2f-8e7a0068118a.filesusr.com/ugd/418e76_bcc3e16c89f948708c4265834b26f42b.pdf?index=trueIn PDF document text
  • https://7397c0cb-c521-41cf-8f41-c55d93b05391.filesusr.com/ugd/95089d_0519464abf884bfd908949dd2214f136.pdf?index=trueIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/autocad_2d_3d_book.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0441/0517/1096/files/rilukek.pdfIn PDF document text
  • https://825feb1d-c03a-41b9-a9e5-1bd00ca0d9be.filesusr.com/ugd/69b86f_51d06a5aa12245ec9f90d086a3c0cc76.pdf?index=trueIn PDF document text
  • https://519e0b21-74ce-457b-8432-79d97142d7b8.filesusr.com/ugd/529dbf_5313f0437064458b89ea6d5b9215eac0.pdf?index=trueIn PDF document text
  • https://7ef4a3ce-6851-4d7a-9ecc-f87ee2aaba3c.filesusr.com/ugd/cc03df_d76182c053ed43aaad231d6397e0a26a.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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