Malicious PDF — malware analysis report

Heuristics 4

• 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.
• 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://ttraff.cc/123?keyword=2020+form+1040+es+voucher In PDF document text

  • https://cdn-cms.f-static.net/uploads/4370052/normal_5f90ffc951f36.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366344/normal_5f872cb5e4448.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367005/normal_5f94c372d9b6b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409118/normal_5f9b0f437d835.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375086/normal_5f98d3314544f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368489/normal_5f9b7ad0c490c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365546/normal_5f8dba9f0f005.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/2b55f9d9-62b5-4fe2-aab9-730b80bb265d/smash_ultimate_flash_man.pdfIn PDF document text
  • https://s3.amazonaws.com/luramamelolem/4612436474.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2fdc60fe-b7ca-4f39-9b15-1e916743a934/98147361440.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4fbdb6cc-a471-474d-a3cc-066435034f74/4673062146.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5db6d786-e28d-4041-9290-5d64c4a2b9f2/simsim_computer_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7c58d113-1628-4c19-b0cd-e27ac06313dd/79833681365.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/47be722e-2df0-4862-8639-0956c437f373/math_answers_apk.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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