Malicious PDF — malware analysis report

Heuristics 5

• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://traffset.ru/123?keyword=strike+force+heroes+4+unblocked+armor+games PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4416502/normal_5f964ece4e8c8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366337/normal_5f872e84d94b1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369315/normal_5f9508f979d18.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377098/normal_5f8ac86f27d4d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4426675/normal_5f997dadd8984.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378379/normal_5f8a32df0aa42.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/kezemiradigu/free_mp3_music_download_apk.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9438f12d-c0f1-4294-b562-925ba3d9963c/forgot_gopro_wifi_password_hero3.pdfIn PDF document text
  • https://xobonub.files.wordpress.com/2020/11/jolin.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/850de830-75b6-4fd0-aa2a-52de5c5f59fd/ludubuzatipa.pdfIn PDF document text
  • https://dawadin.files.wordpress.com/2020/11/14711918979.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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