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=calculus+for+beginners+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366993/normal_5f899602e948f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372682/normal_5f8ef9998b403.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413462/normal_5f94272527844.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368954/normal_5f909eb3e3b5d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367311/normal_5f908b22d2b29.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378608/normal_5f8c266ca80ad.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386330/normal_5f8f70ef7b360.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370080/normal_5f9097aff3911.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368736/normal_5f8c7e14853e4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392666/normal_5f8e5ed987456.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368245/normal_5f8835ebb68b0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369304/normal_5f8e782a90e37.pdfIn PDF document text
  • http://www.opentle.orgIn extracted file (stream_004_off000063ff.bin)
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005215.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005215.bin)
  • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000ac2b.bin)
  • https://uploads.strikinglycdn.com/files/06ad84e9-48a8-4777-a935-d688c0c51956/10005336565.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/57ea90e6-7c32-474b-8313-7c5f501fc39a/13822138136.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/511bd3af-fb02-4eab-b3c0-42d01a42befb/wodarajizotilen.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8655/4291/files/navy_enlisted_retirement_instruction.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/5277/6603/files/decimal_place_value_worksheets_6th_grade.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/1742/4024/files/cuantos_libros_tiene_la_biblia_catolica_ortodoxa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0475/2126/7878/files/36401629852.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/8804/3420/files/86506846053.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://www.gnu.org/licenses/gpl.htmlIn extracted file (stream_004_off000063ff.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00005215.bin)

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