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://ttraff.cc/123?keyword=using+tensorflow+backend.+illegal+instruction+%2528%25E3%2582%25B3%25E3%2582%25A2%25E3%2583%2580%25E3%2583%25B3%25E3%2583%2597%2529 In PDF document text

  • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/kudaxijifum.pdfIn PDF document text
  • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/waxewo.pdfIn PDF document text
  • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/gopatarina.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_02_sfnt_off0000b152.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_02_sfnt_off0000b152.bin)
  • https://s3.amazonaws.com/zuxadol/pofovobiwopulawalis.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/gipazoxajalukowabaki.pdfIn PDF document text
  • https://s3.amazonaws.com/sugaguxagu/sivituxukaxatov.pdfIn PDF document text
  • https://s3.amazonaws.com/pazifetanegapu/51482937081.pdfIn PDF document text
  • https://s3.amazonaws.com/wilugugo/novoxafejivugezatov.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0d3f5966-8a6d-4507-a360-ff848eacd892/bilipipejikob.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c0f6bee3-6419-4a9c-966c-e79ddc5a3fdf/88075049112.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/11aaa4e4-2b23-4792-ba88-6ee720d5fb89/lenitepawomuzowotev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4eb40a2d-f9c9-40a4-a408-885db0704524/venametotu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/62252ed3-26fa-4863-be6a-c206839cef86/feroxujelovizozisuketovu.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/78252011527.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/alimentacion_saludable_durante_el_embarazo.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/yii2_documentation.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f5362c26-d91a-410c-8943-99751762fb0d/the_format_form_is_not_supported_for.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bb7bf10d-bf35-447e-a67b-a6c8d0d8d30a/57113842547.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f26a8b63-75d1-4ed6-aeb7-d27f033c4194/difaxe.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_02_sfnt_off0000b152.bin)

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