Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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/strik?keyword=download+apk+google+chrome+pc In PDF document text

  • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/5632305.pdfIn PDF document text
  • https://netulomite.weebly.com/uploads/1/3/2/8/132814473/barugag.pdfIn PDF document text
  • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368972/normal_5f888a0158680.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366339/normal_5f87b06938dd4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367911/normal_5f89068328853.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365582/normal_5f870aeed0c13.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8762839d8ad.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365627/normal_5f88f9e3ea52d.pdfIn PDF document text
  • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
  • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/lagorijudiwox-bunawuw.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/cef4c5d6-9e6d-46a6-b1af-d2713da4dad7/70475084977.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/41b7d3fe-bcec-44ab-9511-9f2cfe18ec3c/51137784378.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/25bb4896-3bc3-4ae7-ae1a-c51776dea146/89231635249.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5396db1f-db70-4d95-b65a-abc1f2b359d6/70269722928.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/65caeab2-5012-4027-b17c-6666de5dfd8f/55185538119.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f27e0d63-de85-4b98-82c3-3b5d6ea24531/66380899228.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b877becd-ef90-4933-adb4-13bb77e0e24e/rotosujamabevevo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bbd69aec-7abe-4813-9894-42cf1b2c34a1/sizogamoja.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/674580a4-5700-4d78-8799-c5d045416330/darukopu.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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