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.
• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://trafffi.ru/aws?keyword=quick+blue+bleach+ratio PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4369336/normal_5f92a38acab9d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384836/normal_5f8fbbfd46d24.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403266/normal_5f9e40ee03af5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375886/normal_5f89b2357104d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4447903/normal_5fa3107eae7cf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370785/normal_5f8b17b557e72.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382965/normal_5f9431200e21d.pdfIn PDF document text
  • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/9950963.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366308/normal_5f87399df0c7d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369781/normal_5f8e64dc8e0ff.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/89ddf853-de4f-484f-999b-468733f7c126/sekufilawulon.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/afc1bed6-d82c-41d6-8f8e-988fe02ab985/63391403470.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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