Malicious PDF — malware analysis report

Heuristics 7

• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://zajinet.ru/wix?keyword=shark+dichotomous+key+worksheet+pdf PDF link annotation

  • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/sogidugovivi.pdfIn PDF document text
  • https://tizojutatow.weebly.com/uploads/1/3/1/4/131406606/refanafubu.pdfIn macro / runtime command snippet
  • https://povarudoro.weebly.com/uploads/1/3/5/3/135324530/9995053.pdfIn PDF document text
  • https://cdn.sqhk.co/ketalidukepi/dijhpgd/singtel_top_up_card_data.pdfIn PDF document text
  • https://cdn.sqhk.co/xovepejegosi/ltnnjg8/petsmart_banfield_nashville.pdfIn PDF document text
  • https://tibijipobarak.weebly.com/uploads/1/3/4/4/134493900/vomejisukogageborop.pdfIn PDF document text
  • http://timinipitos.22web.org/who_makes_the_best_mulching_blades.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4425255/normal_5fcc93dc2da67.pdfIn PDF document text
  • https://fotewusobowo.weebly.com/uploads/1/3/5/3/135339642/devatazogo-jarak-wunomavikum-guzenosud.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4459654/normal_5fe302ace7db4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393016/normal_603339388f09e.pdfIn PDF document text
  • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134In macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/jijari/tutorial_excel_2013.pdfIn PDF document text
  • http://kunubuxeduw.epizy.com/how_to_do_echo_command_in_cmd.pdfIn PDF document text
  • https://s3.amazonaws.com/xeroguru/romesamulejareweguxe.pdfIn PDF document text
  • https://s3.amazonaws.com/bomifabipi/pexerexeloledafifasujepa.pdfIn PDF document text
  • https://s3.amazonaws.com/gozilum/tomelobumozapidego.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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