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.
• PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
  PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
• 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://gettraff.ru/123?keyword=coding+apps+for+android+offline In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366381/normal_5f871387c017d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8750bb15857.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371783/normal_5f887b5319aa3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367627/normal_5f884cecc0fe7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366308/normal_5f881e901995e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370052/normal_5f88a86aba86a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366044/normal_5f86f85a24e01.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369903/normal_5f8a1bdebe38a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8a4be70f960.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366336/normal_5f8a0ef0dfe73.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365599/normal_5f870afe6daaa.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006ab7.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006ab7.bin)
  • https://uploads.strikinglycdn.com/files/576e52a3-59de-46a9-960b-0d4194d86451/40579007773.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/db8ce471-b7e8-4f73-97a0-639ed1c6dae3/57875732301.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/0449/2438/files/73242422836.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/1070/6619/files/convert_word_to_using_java.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/1409/4485/files/55052220452.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/8306/7292/files/factors_influencing_health_seeking_behaviour.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/6530/2936/files/37794144584.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0488/1488/2981/files/when_i_grow_up_worksheet_grade_1.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_off00006ab7.bin)

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