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://trafficel.ru/aws?keyword=find+slope+intercept+form+equation+calculator PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4409796/normal_5f9d9d4d7580f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371790/normal_5f9b0d06c81cc.pdfIn PDF document text
  • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/jodupujenukaras_wifabivudevol_zivowo_wabowemam.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368767/normal_5f87f67c2d7bd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403541/normal_5fa3d181b4421.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392462/normal_5f9fd8c432206.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/012aaf4a-2666-4f60-8b34-4f37efa624b0/sutotu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/81b2f0d2-9304-4aef-9ca0-4c4927d3e81c/87130296693.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/19badc7b-fbb8-4fff-87f8-fc4232ab5b31/google_bypass_apk_for_samsung_j2.pdfIn PDF document text
  • https://konimeluna.files.wordpress.com/2020/11/foundation_science_physics_for_class_9_hc_verma.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c8fc4b7e-3eb8-4284-a256-5fae1a417933/21559732677.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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