Malicious PDF — malware analysis report

Heuristics 6

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://jacksth.ru/wb?keyword=when%20we%20were%20young%20lucy%20schwartz%20chords%20and%20lyrics PDF link annotation

  • https://revawowi.weebly.com/uploads/1/3/5/3/135317167/vepuguwuxaxele.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4413373/normal_5fc954b1bfa06.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4417049/normal_5ffa047293a19.pdfIn PDF document text
  • https://jupurelapuloful.weebly.com/uploads/1/3/3/9/133997255/76655.pdfIn PDF document text
  • https://palisuxil.weebly.com/uploads/1/3/1/0/131071308/diravasazaserom_kalokabibu_dagema_xoleterawesuva.pdfIn PDF document text
  • https://cdn.sqhk.co/nogawevorus/gchcqgc/hachiko_movie_free_download_in_tamil.pdfIn PDF document text
  • https://pufegigan.weebly.com/uploads/1/3/1/0/131070168/muwagidogiwik.pdfIn PDF document text
  • https://gadofipod.weebly.com/uploads/1/3/6/0/136056298/8f70d033c6a960f.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4404290/normal_5fe5e558a13ad.pdfIn PDF document text
  • https://cdn.sqhk.co/navotezive/jJdNlk9/foxoxa.pdfIn PDF document text
  • https://xepevuke.weebly.com/uploads/1/3/0/7/130775471/01ec34dbb90.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/wuzalugiseto/kalinarixojogobub.pdfIn PDF document text
  • https://s3.amazonaws.com/bulalowisu/types_of_biotransformation_reactions.pdfIn PDF document text
  • https://s3.amazonaws.com/widetunipet/sugaramiverodagopixe.pdfIn PDF document text
  • https://s3.amazonaws.com/buxoparadazegu/59858036037.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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