Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vejisiwitize.weebly.com/uploads/1/3/7/5/137515314/zivivadekutemubufu.pdf.
• 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://pistant.ru/pbw?utm_term=trigonometry+worksheet+grade+11 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4410678/normal_604b38d967042.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4475875/normal_60502d51ab7bd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371536/normal_605d405aa139a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4490128/normal_60526e0fa287c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4491933/normal_60674c11abe8c.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4389576/normal_60053e5c3acd9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4443329/normal_5fe743c4f38ff.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4421471/normal_601fe2ea42048.pdfIn PDF document text
  • https://vejisiwitize.weebly.com/uploads/1/3/7/5/137515314/zivivadekutemubufu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393898/normal_6054022a3eaec.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4476596/normal_603e277987f8d.pdfIn PDF document text
  • https://lotuvimipel.weebly.com/uploads/1/3/0/7/130739731/fesuzagu-dekubunafarexed-wekapoxojafigup.pdfIn PDF document text
  • https://static.s123-cdn-static-d.com/uploads/4403948/normal_60b560464889f.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.opentle.orgIn PDF document text
  • https://uploads.strikinglycdn.com/files/b3dcc0ec-2158-43ea-915c-8280271f40dd/33910045304.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0d66589c-1675-420a-aa49-0e25b148004a/how_to_describe_rhonchi_lung_sounds.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/78b6bbe6-789d-45d0-abe8-cfc90d68e54f/acurite_pro_weather_center_rain_gauge_not_working.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d2e716fa-2e63-42ec-b4dd-c4b02b877ddb/32191392401.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/acf25bd8-3b65-4e7f-b68a-8b4e8717b401/listening_skills_quizlet.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

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