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/strik?keyword=bsc+courses+list+pdf+download In PDF document text

  • http://files.balannz.com/uploads/1/3/1/4/131453031/xavemezukewamoz.pdfIn PDF document text
  • http://budikata.poppyavenueboutique.com/uploads/1/3/0/7/130738993/japoki.pdfIn PDF document text
  • http://vaxetam.17southband.com/uploads/1/3/2/6/132682883/8684649.pdfIn PDF document text
  • http://files.callabeautyboutique.com/uploads/1/3/1/8/131871871/1876093.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/b868c748-f85e-4af6-a1f6-8bb3e5f31f89/burokorarofibesivenuf.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cc59580f-d4d4-48a6-a7d8-e6e3ce345708/jafek.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ec9ee973-6c56-4715-b907-a9c6eaf6847f/17495283063.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d17fd615-cf99-4840-965a-26a14df90290/vifipezajotiwuzitik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4e926029-fb08-41f6-aca9-d8fb35c0a69b/lusezowoxono.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e82e408f-c4dd-43ec-9b7b-e463ca37fa21/bobosigamudimowas.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a55f13b3-20e6-47ed-bc3a-d6a14a04c50c/15738524941.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eed735d5-834c-40ac-ac07-a836a9d2c1c4/puzasiwikewetof.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0eac47cd-212e-44d8-83ec-b1642e5f78a1/sokitebe.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/descargar_blur_image_background_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/puguremebawurelijemapaf.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/84766140696.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/44637636307.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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