Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9b4fe4cecc75fe…

MALICIOUS

PDF

73.0 KB Created: 2021-03-09 12:04:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 95e3cbfeb6dae33193049314aa6e24a8 SHA-1: a31209455e55f7a816641e09f3018cc50048d91c SHA-256: ce9b4fe4cecc75fe82c09f05350b1d5bcc515032d4f21ff20e11cfb79fdf6120
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/wix?keyword=diamondback+road+bike+century+1 PDF link annotation
    • https://cdn.sqhk.co/xajevedu/ZjfQOhg/ramp_car_jumping_level_10.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/c0nMVjh/jidepuke.pdfIn PDF document text
    • https://kodusikur.weebly.com/uploads/1/3/1/6/131606179/edb9c10ce00f.pdfIn PDF document text
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/2666951.pdfIn PDF document text
    • https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/talagavo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369796/normal_5fe4048c379d7.pdfIn PDF document text
    • https://tiforunu.weebly.com/uploads/1/3/1/4/131437018/najikotepawuriw-ragedinaxeki-sewawizufi.pdfIn PDF document text
    • https://rawitexebava.weebly.com/uploads/1/3/4/4/134487877/vojiniviran.pdfIn PDF document text
    • https://nopuwilimo.weebly.com/uploads/1/3/4/4/134490360/c3c8967ec25b.pdfIn PDF document text
    • https://sitekitenuzuvi.weebly.com/uploads/1/3/2/3/132303150/77f8642e87c.pdfIn PDF document text
    • https://pegofugetil.weebly.com/uploads/1/3/5/3/135347090/pofipetowigaj.pdfIn PDF document text
    • https://sidafixeruj.weebly.com/uploads/1/3/2/6/132681612/6880151.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495860/normal_5fcd9b4d320bb.pdfIn PDF document text
    • https://litodamun.weebly.com/uploads/1/3/4/7/134710511/kowupujosenuf-seledelavinef.pdfIn PDF document text
    • https://vidijizuv.weebly.com/uploads/1/3/0/7/130776341/7436783.pdfIn PDF document text
    • https://vofovolovun.weebly.com/uploads/1/3/1/4/131483423/12edab08787e445.pdfIn PDF document text
    • https://dujapiloxi.weebly.com/uploads/1/3/1/8/131857305/3198948.pdfIn PDF document text
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/damalitekurewologil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCA 5232 bytes
SHA-256: 65ab7e9fff0ad50a2e8280cfe299bbbf3de7514d05f6089caece690934f52a35
font_01_sfnt_off0000f193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF193 10584 bytes
SHA-256: 07f422dc2e87b519c14557e843421c78975b36f21c403e4d076e5a991c004b2e

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