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.
• 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://cctraff.ru/123?keyword=insight+timer+app+apk In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369324/normal_5f88175b78ab7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387919/normal_5f8d86fd5bd3a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366958/normal_5f875c223e986.pdfIn PDF document text
  • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/b45f49ba.pdfIn PDF document text
  • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/disebonokotidamewu.pdfIn PDF document text
  • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/2090670.pdfIn PDF document text
  • https://repotadidutu.weebly.com/uploads/1/3/4/3/134310826/8037943.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068cd.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068cd.bin)
  • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009ef7.bin)
  • https://s3.amazonaws.com/sulasatevirexo/kizoburinifekuruvaw.pdfIn PDF document text
  • https://s3.amazonaws.com/mipeboro/coulson_richardson_s_chemical_engineering_volume_1_free_download.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/gipunerobe.pdfIn PDF document text
  • https://s3.amazonaws.com/vidadaviwal/9787017358.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0ebd2659-dce0-45b3-8b71-f16b18609c03/63804714844.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ace9aad8-de50-45a1-8930-2d37dd6a08cc/jedudogureme.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5c1ffa53-2e81-4f3a-ab56-e5ca45981ec7/vivewutifoxudoremidet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d72e970a-88d5-4b19-bfff-2e1ddb0d36e7/fejizawipibig.pdfIn PDF document text
  • https://s3.amazonaws.com/dejolavubukugeb/89125988535.pdfIn PDF document text
  • https://s3.amazonaws.com/xanebavifamopez/kepulekavakuvozar.pdfIn PDF document text
  • https://s3.amazonaws.com/zobuwubedak/90507295533.pdfIn PDF document text
  • https://s3.amazonaws.com/rowubunak/algorithmic_trading_book.pdfIn PDF document text
  • https://s3.amazonaws.com/tipikaxe/alexopoulos_introductory_mycology.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 extracted file (font_00_sfnt_off000068cd.bin)

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