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.
• PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
  PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
• 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.com/123?keyword=freestore+apk+new+version In PDF document text

  • https://s3.amazonaws.com/jamokaroxoj/valagolugodikagosa.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/lajudidolefajofaju.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/dewobexilukuzaga.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/39169046670.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366337/normal_5f875e6dda430.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367283/normal_5f873dce0e723.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375077/normal_5f8be1f84d058.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369505/normal_5f8fb6aa483ca.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387235/normal_5f8df9e23b369.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378845/normal_5f8e66072b2df.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386092/normal_5f8c807816968.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388178/normal_5f8fde30c538a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367007/normal_5f890cbe7f907.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366978/normal_5f8828cd4475a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383924/normal_5f8f3d347fe03.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374682/normal_5f8b531da88f3.pdfIn PDF document text
  • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/218126bce.pdfIn PDF document text
  • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/837322.pdfIn PDF document text
  • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/9749670.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007471.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007471.bin)
  • https://uploads.strikinglycdn.com/files/304c08fe-b59c-4170-8779-2d8395661e50/xamapubejaxu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c73c2c0e-bd42-4362-a18a-a7fcc0e8c938/89203292338.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_off00007471.bin)

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