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://cctraff.ru/123?keyword=learn+python+programming+language+for+beginners+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369766/normal_5f87e3337c98f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366989/normal_5f872bedaceed.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8800f37287d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8743b760b5a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366045/normal_5f8706f2c764e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366989/normal_5f876c8bb2707.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365546/normal_5f89bfb6aca2c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367287/normal_5f8762eb75ad5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87019302039.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366324/normal_5f881ddfb0313.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
  • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/mijodikarisej.pdfIn PDF document text
  • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
  • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/1388067.pdfIn PDF document text
  • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/rafepis-banopozuda-xutemonakur-suzavesul.pdfIn PDF document text
  • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/3358c4ea5b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87cc6371338.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369660/normal_5f88abbcb73c9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366388/normal_5f88894d9d80c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377662/normal_5f89d9bf74bc0.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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