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/aws?keyword=construction+business+proposal+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4378848/normal_5f8d24f184235.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392215/normal_5f90e83c1f9cf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388063/normal_5f92481e63b84.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390095/normal_5f9661824467b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367919/normal_5f87b2152e8e1.pdfIn PDF document text
  • https://s3.amazonaws.com/pisedij/reading_comprehension_book_vk.pdfIn PDF document text
  • https://s3.amazonaws.com/salosibejodod/84804100439.pdfIn PDF document text
  • https://s3.amazonaws.com/zuxadol/suzewok.pdfIn PDF document text
  • https://s3.amazonaws.com/zevutebulaworel/92130469491.pdfIn PDF document text
  • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/tetevewutizevis_zofanabebadavu.pdfIn PDF document text
  • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/6277688.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375351/normal_5f8eff4dba58d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366027/normal_5f889e0eecb00.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8c09db4cd94.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a46a.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a46a.bin)
  • https://cdn.shopify.com/s/files/1/0482/7424/3748/files/73502396106.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/0741/7757/files/42123244233.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_off0000a46a.bin)

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