Malicious PDF — malware analysis report

Static analysis result for SHA-256 c88016178fa2cdcb…

MALICIOUS

PDF

71.4 KB Created: 2021-02-21 14:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ac0cb3c9e795126983fd6bed050b08b SHA-1: 230d8b3a7e18af42ccbe61b5145f680326dd1ebd SHA-256: c88016178fa2cdcb7316642c409a5463559a0a5ec526b5a2158e6d6d7dfe7d57
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=kinh+long+chua+thuong+xot+15+phut+moi+ngay PDF link annotation
    • https://demuvejujewik.weebly.com/uploads/1/3/4/0/134042515/8357022.pdfIn PDF document text
    • https://zutuvibob.weebly.com/uploads/1/3/1/4/131407898/xevepedi.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/d379d8ebb6532f.pdfIn PDF document text
    • https://bisebisa.weebly.com/uploads/1/3/1/4/131406118/9916499.pdfIn PDF document text
    • http://sentytld.online/legeputirugugonovigomeheik9.pdfIn PDF document text
    • https://noruwapawufibem.weebly.com/uploads/1/3/0/9/130969999/868383.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/6961852.pdfIn PDF document text
    • http://rusakova.space/96929751129nv8tt.pdfIn PDF document text
    • http://sellamorem.com/how_to_pay_for_a_ticket_online_in_californial3q27.pdfIn PDF document text
    • http://circus.market/tefiwofe2bb52.pdfIn PDF document text
    • https://bodokevusigow.weebly.com/uploads/1/3/2/7/132740435/1470624.pdfIn PDF document text
    • http://all-casino.xyz/808396049560wecn.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/pedabijimag-zubefarupabuli-xogozovepumixav-lawiwakexodo.pdfIn PDF document text
    • http://fumigatoff.online/murozuxafwbi4h.pdfIn PDF document text
    • https://talegojozafadi.weebly.com/uploads/1/3/2/3/132303005/5e452064ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ditiruz/25732013908.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/torewowipasunabaxafixi.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/cbse_class_11_biology_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/pigefegijeji.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/batman_joker_images_free.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5D 5152 bytes
SHA-256: 363440a7a1bbf209abced72ed1e1e454e143093a6e6eafc7261f223ba184be6f
font_01_sfnt_off0000dfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCC 10104 bytes
SHA-256: b6e8dd784b6d1eec4265dd6a7f378c05af7486a023f2164ffe0551ed9c9aa08a
font_02_sfnt_off0001021e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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