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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• 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/wb?keyword=stoichiometric%20calculations%20pdf In PDF document text

  • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/96240.pdfIn PDF document text
  • https://kaxokotul.weebly.com/uploads/1/3/4/3/134380066/dipokuzakoguv.pdfIn PDF document text
  • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/eef2c8539.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/ce2c4ccf-2a6f-41f0-8a1f-c7775e1013d8/livro_metafsica_dos_costumes_kant.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6c5a77a7-e06f-4667-8d2c-370a618ea77b/guerra_mundial_z_2_pelicula_completa_en_espaol.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c0b2a918-f105-4439-9e22-5dafb85739a9/50174487569.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/588f799d-f82b-40c4-854a-f43b88f6247a/me_divierto_y_aprendo_segundo_grado_de_primaria.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/310db2b2-50d9-466e-b7c0-6867943e3850/46485576915.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0f93b881-d3ee-484c-8f0a-ec0ce7e8cba0/38704058902.pdfIn PDF document text
  • https://s3.amazonaws.com/vidadaviwal/biomaterials_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9eec8232-f358-40fe-9189-d168baaab56e/adverbios_de_modo_ejercicios_ingles.pdfIn PDF document text
  • https://s3.amazonaws.com/pazovugal/69445220277.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3d5d17c0-579c-4d6c-894e-5903130251b3/puvanufafugowagoliju.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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