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/aws?keyword=oil+less+turbo+issue In PDF document text

  • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/pobudobuguwag-titunerogarof-wijup.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388163/normal_5f8d429fe0c6a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387035/normal_5f923079c5e64.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375885/normal_5f8a2e4ad3d75.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375525/normal_5f9b6d3b8291f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387235/normal_5f94a663a9928.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8704dbe3e1d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371020/normal_5f89ba4f66566.pdfIn PDF document text
  • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/216288.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f41.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f41.bin)
  • https://s3.amazonaws.com/busutafitufe/mr_bond_akshay_kumar.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a135b758-a91d-44df-b9bf-b9d9f5bd3211/57998919784.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a0866cd1-f194-49c8-8bca-30794933fca3/18118790009.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f70863fc-0279-40f0-873d-cf8444c19b31/76528536739.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 extracted file (font_00_sfnt_off00005f41.bin)

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