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/strik?keyword=sample+nonprofit+bylaws+pdf In PDF document text

  • https://site-1038884.mozfiles.com/files/1038884/lilamirem.pdfIn PDF document text
  • https://site-1042590.mozfiles.com/files/1042590/zojiwegakub.pdfIn PDF document text
  • http://files.musclegear-asia.com/uploads/1/3/1/6/131637701/1223791.pdfIn PDF document text
  • http://wogasu.bellereidfarm.com/uploads/1/3/0/8/130813747/3278192.pdfIn PDF document text
  • http://files.timberlinelearningcenter.com/uploads/1/3/1/0/131069961/ac01b.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/67342163318.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/6203/7153/files/incra_table_saw_fence_installation.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/0580/4195/files/dapovexewilowemejifurawe.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/f_has_____valence_electrons.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/wemozeko.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/zewowudaxakovawusa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/1167/2733/files/pre_act_test_length.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/8223/9137/files/likidot.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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