Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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/123?keyword=pandora+music+app+android PDF link annotation

  • https://zovotinaselon.weebly.com/uploads/1/3/4/5/134589175/c2a84b073b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378621/normal_5f8f2ef144299.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://s3.amazonaws.com/gizonukorad/char_in_java_program.pdfIn PDF document text
  • https://s3.amazonaws.com/piwanisaj/lolex.pdfIn PDF document text
  • https://s3.amazonaws.com/juliziwojatige/agate_rock_value.pdfIn PDF document text
  • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
  • https://s3.amazonaws.com/pujirageg/rother_elementary_school_redding.pdfIn PDF document text
  • https://s3.amazonaws.com/vawoginele/every_dead_thing_john_connolly_summary.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/43179f6e-6adb-4f55-94d2-081d1aa36e66/cbr1000rr_2017_service_manual.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e743c6fb-d052-4f8a-a90c-a56673fd74c3/ap_environmental_science_chapter_1_study_guide.pdfIn PDF document text
  • https://s3.amazonaws.com/tawosutosuxi/bifaxatobepaze.pdfIn PDF document text
  • https://rudasevubut.files.wordpress.com/2020/11/inmunidad_artificial_activa.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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