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.
• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://vilenefex.ru/award?keyword=alphago+zero+nature+paper+pdf PDF link annotation

  • http://helplnstagramcontact6088758.com/kevarogulotdpkck.pdfIn PDF document text
  • https://s3.amazonaws.com/gudukupir/ielts_reading_answer_sheet_2019.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388293/normal_603c1764b49b6.pdfIn PDF document text
  • http://free-at.pro/tv_guide_austin_texas6wwpq.pdfIn PDF document text
  • https://s3.amazonaws.com/dazemi/28931743654.pdfIn PDF document text
  • https://s3.amazonaws.com/xidulumexi/nodusaf.pdfIn PDF document text
  • http://balifruit.com/20929254809tyyaa.pdfIn PDF document text
  • http://swast-group.website/independent_commission_against_corruption_act_19882ed8i.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4467030/normal_604169601616c.pdfIn PDF document text
  • http://itgermany.net/fawadm2o3n.pdfIn PDF document text
  • https://zurejekivob.weebly.com/uploads/1/3/0/8/130813755/vonagix-jopomuwapekubor.pdfIn PDF document text
  • https://s3.amazonaws.com/bisapovepizaj/windows_powershell_3.0_step_by_step_free_download.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4491671/normal_60047c0d96a0b.pdfIn PDF document text
  • https://s3.amazonaws.com/zunaduxa/android_activity_lifecycle_explained.pdfIn macro / runtime command snippet
  • https://rasozonikazip.weebly.com/uploads/1/3/4/9/134904665/8772307.pdfIn PDF document text
  • http://mattelipsticks.site/2550724247807280.pdfIn PDF document text
  • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/2489950.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_33a3fbd7b33f44979903942fd45225d7.pdf?index=trueIn PDF document text
  • https://564fd4a8-0e6d-4f97-813a-a14a70c45316.filesusr.com/ugd/f90d28_c492cc0807d04c92b08b68771dd6ccb3.pdf?index=trueIn PDF document text
  • https://b760d8db-9746-4821-aa2b-94c9f806d328.filesusr.com/ugd/26ce45_bade6fff13d4410cb90283841c5385ff.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

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