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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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://druttle.ru/wb?keyword=firefox%20focus%20for%20windows%2010 PDF link annotation

  • https://mapaluloxusogor.weebly.com/uploads/1/3/0/7/130739646/6186194.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4454306/normal_5ffda235867d5.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4368225/normal_5fc68fbd794e1.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4447251/normal_5fe5ab56519cb.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4375541/normal_600932c3a33ff.pdfIn PDF document text
  • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/3895531.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4368969/normal_5ff898cf9a3c8.pdfIn PDF document text
  • https://jetukuzimol.weebly.com/uploads/1/3/2/6/132695660/kigurilipojupet.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4366969/normal_5ff71a3b30799.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389101/normal_601a1f38f2cdd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375197/normal_5fe70017ad1c0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4485698/normal_601d5eba3f007.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4365552/normal_5fe486c459720.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4453900/normal_6008a45d90641.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4454424/normal_5ff6337c53cc5.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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