Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://trafffe.ru/strik?utm_term=biology+concepts+and+applications+without+physiology PDF link annotation

  • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/tabutotitaxanojin.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410703/normal_5fa3a1649e0b0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383699/normal_5f9c29e83c203.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4418984/normal_5f9d16636b02e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383138/normal_5f8faf8408eec.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4481671/normal_5faf0a315594d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409621/normal_5f9b70c881676.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374368/normal_5f89d1b930972.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/jifesu/jerarekiximog.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fdeabd00-68d8-4892-8089-acd80234f216/kaspersky_antivirus_license_key_2020.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3c1b0cef-9931-442a-af91-970bd58185f0/zolugeza.pdfIn PDF document text
  • https://s3.amazonaws.com/jagux/58795102214.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/35c23944-8d77-495e-b061-9ae3bfbe773d/87205754909.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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