Malicious PDF — malware analysis report

Heuristics 7

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://gettraff.ru/strik?keyword=lettre+finale+muette+cm2 In PDF document text

  • http://files.thegillt.com/uploads/1/3/2/6/132682327/pelimopovi-joniz-tudiseponejenip-besomo.pdfIn PDF document text
  • http://nuviwili.stlawrencedistrictmedicalcentre.com/uploads/1/3/1/3/131381787/zononupogukogav.pdfIn PDF document text
  • http://files.maliadcl.com/uploads/1/3/2/6/132682697/2304385.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/1/0477/2691/9836/files/skyrim_op_crafting_guide.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/5979/2022/files/zitej.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/9431/3622/files/cop_craft_manga_raw.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/half_life_gizmo_answer_key_activity_a.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0478/7952/0422/files/bemasoxulewerufakuwuxew.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/taco_bell_chicken_quesadilla_calories_and_fat.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/8746/9469/files/rabagubupixalowap.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/direwajopeditu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/775b02cc-c528-48ff-aed5-765c96ac206c/tilofejuripazozoxusubipi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5596469d-a5ef-4275-b3e4-6bf2a9b70e05/molujewixeloson.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9b57d5b9-5d3d-46d5-bc08-3be017195d1c/63151678116.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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