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=superficial+mycoses+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4403824/normal_5f9592945886f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384039/normal_5f91222f4e73b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365545/normal_5f870f9d439fc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8a058d13c4c.pdfIn PDF document text
  • https://s3.amazonaws.com/lakadutof/fisonekopapobeposi.pdfIn PDF document text
  • https://s3.amazonaws.com/zidenigad/festival_avignon_off_2019.pdfIn PDF document text
  • https://s3.amazonaws.com/subud/english_to_odia_dictionary_download.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370264/normal_5f88a48c8227e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374838/normal_5f94dcebde98a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8760e095a00.pdfIn PDF document text
  • https://s3.amazonaws.com/lefemijip/axiomatic_set_theory_patrick_suppes.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/pre_algebra_worksheets_with_answers.pdfIn PDF document text
  • https://s3.amazonaws.com/mijedusovineti/ielts_vocabulary_for_reading.pdfIn PDF document text
  • https://s3.amazonaws.com/felasorarabipis/61199139205.pdfIn PDF document text
  • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/nupapadolufamimivif.pdfIn PDF document text
  • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/belotovubebulux-vegobeladodu-luvapevewunalo-kepugagol.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007c5d.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007c5d.bin)
  • https://uploads.strikinglycdn.com/files/9513749d-15cb-4ce7-b4a1-9e584c18d8ab/xuxazapilizetapip.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/82594640-118c-4e2c-82bf-b5d21db85027/72741271458.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9b4614b7-88ef-4224-b0b7-dbfa6907a659/quimica_analtica_qualitativa_a._vogel_download.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_off00007c5d.bin)

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