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=descargar+whatsapp+nuevo+2020+apk In PDF document text

  • https://cdn-cms.f-static.net/uploads/4377717/normal_5f8d0d2bbfe27.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378834/normal_5f8d9fb54c902.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380545/normal_5f8e2c9f86b3e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384036/normal_5f8cb29680915.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375889/normal_5f8ceb7438288.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8b950be1fc4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370265/normal_5f89e84b8dc4e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378175/normal_5f8dbb201ee74.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366969/normal_5f873fc4a5b8b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382974/normal_5f8c6d0acbc25.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/1d57d6c8-9868-49bc-af7f-3a88dfcb9d2e/48609849090.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e8309298-8cfd-41f5-956d-34ac9a2aa551/nesabolujazagatojukatex.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4feb9237-b367-4568-985a-9c2b1b24a66f/kanixadotidejigevixuk.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/818462aa-8eb0-4cf2-8fdd-92dfe33c2e4e/78055988927.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/21907098144.pdfIn PDF document text
  • https://s3.amazonaws.com/tetazino/22028738540.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0463/4139/0492/files/free_standing_fireplaces_electric.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/2743/0059/files/selective_laser_sintering_sls.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/3055/6053/files/costco_10x20_canopy_tent_with_sidewalls_instructions.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/2877/3547/files/smoon_ui_rounded_icon_pack_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/3591/3123/files/jenuxujigepipabatixoz.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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