Malicious PDF — malware analysis report

Heuristics 5

• 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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://traffine.ru/aws?utm_term=direct+and+inverse+variation+worksheet+pdf+answers In PDF document text

  • https://cdn-cms.f-static.net/uploads/4376125/normal_5f9144816f114.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4387035/normal_5feb004a4a6df.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378161/normal_5f9f024ec1531.pdfIn PDF document text
  • https://mawakigimewu.weebly.com/uploads/1/3/4/8/134875352/3361935.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4403817/normal_5fdd6ff04dccb.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4475852/normal_5ff8d64633f3b.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4366341/normal_5ff9383f24a17.pdfIn PDF document text
  • https://jegetujo.weebly.com/uploads/1/3/5/3/135300600/917ed9d467b6893.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4380857/normal_5fe15c923e657.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366000/normal_5fbc1ff8bb068.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4408319/normal_5ffd6d81e105e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4475383/normal_5fe9c4cb96dcf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417808/normal_5fadcc9e79327.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409243/normal_5f98f2567ee66.pdfIn PDF document text
  • https://nuropasidax.weebly.com/uploads/1/3/5/3/135393275/naxufejurotokonibek.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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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