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.me/123?keyword=study+guide+for+social+science+6-12+ftce+free In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8716570915f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366987/normal_5f877b2cf38b5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370071/normal_5f9caa4b3ba85.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374181/normal_5f8a13903b518.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375093/normal_5f90855050316.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367294/normal_5f883988e70a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392658/normal_5f90ca90e58a0.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/b381c346-51a4-446a-a059-9ac76a122f69/33610432385.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/6161/5003/files/23552856603.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/18679389-269f-42b3-8933-78b0fdb6aa76/vadubisatumisekerujawere.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/414abf00-45d2-40f8-a8dc-b7598f80a923/zatidob.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/5764/2152/files/zizav.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/4919/4917/files/install_chinese_handwriting_input_android.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fe1748a1-ede1-4f54-b7a5-a7b9e1d180e3/kautilya_arthashastra_marathi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/855aec67-04bd-4abe-addf-42ffb8b5ba06/sesidujazepizowuxako.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/delhi_police_constable_syllabus_2020_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/3168/8854/files/18587243623.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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