Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Security software disable instruction high SE_SECURITY_BYPASS
  Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
• 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
• 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 http://ch-data-2a8fv9s.pw/125174327233q7x6.pdf In PDF document text

  • https://s3.amazonaws.com/latufenaw/altair_inspire_2018.pdfIn PDF document text
  • http://onlinetiser.website/zenwise_digestive_enzymes_walmartpwl9r.pdfIn PDF document text
  • https://s3.amazonaws.com/tetenifeme/what_is_the_reid_interview_technique.pdfIn PDF document text
  • http://natorg.fun/90437727190be08f.pdfIn PDF document text
  • http://blancop.xyz/adguard_premium_apk_final4zse9.pdfIn PDF document text
  • http://goproonly.com/seedfolks_book_trailer3nue8.pdfIn PDF document text
  • https://s3.amazonaws.com/metubevozisul/vederofoxo.pdfIn PDF document text
  • http://pubguckazan.com/star_wars_saga_character_sheet_fillable0wu2r.pdfIn PDF document text
  • https://s3.amazonaws.com/rimejiguvif/87307917199.pdfIn PDF document text
  • http://voztrans.ru/great_unclean_one_datasheetmvuvv.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://feedproxy.google.com/~r/wb/ENAH/~3/3IgsHNHpEfs/wb?keyword=download%20film%20the%20maze%20runner%201%20sub%20indo%20480pPDF link annotation
  • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_aec60eced54d4aa2a34e61bf203f2a86.pdf?index=trueIn PDF document text
  • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_5621719ca70140f9a147343527ea1dc8.pdf?index=trueIn PDF document text
  • https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_9f9ed9a7cf3649ae83d6c7aab934d51e.pdf?index=trueIn PDF document text
  • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_4b5993a10bf94581bc2247faa8bf3c0f.pdf?index=trueIn PDF document text
  • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_574e3d8bd3d0493ab4a736dbabbace8c.pdf?index=trueIn PDF document text
  • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_043c0f848dbe478c8fa3d5f90311a5a1.pdf?index=trueIn PDF document text
  • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_f4c01022a1f64bed9e74858690d6cc58.pdf?index=trueIn 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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