Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba5ef9fed9277b4…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 10:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a0b4b8d84afae64e856df5a585d63e18 SHA-1: 394bee836defd53c91a275885ceb9de3ead6a3dd SHA-256: 8ba5ef9fed9277b499882cfb5bc5b0ee493bb0716dabaa04657a5e7fff82cc0d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a URL that mimics an Amazon Prime Video subscription cancellation page, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=amazon+prime+video+subscription+cancel PDF link annotation
    • http://tudiweva.22web.org/naguzivegag.pdfIn PDF document text
    • http://botojagi.iblogger.org/36363124257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5fd7cc5700fb1.pdfIn PDF document text
    • http://mazezoda.22web.org/barbie_life_in_the_dreamhouse_cartoon.pdfIn PDF document text
    • http://jikonuja.22web.org/catholic_wedding_program_templates.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449990/normal_60142606d7701.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/doxifuba/diarios_alejandra_pizarnik_descargar.pdfIn PDF document text
    • http://lemujiv.epizy.com/napabuzogekisitomupo.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/sivojuposufuz.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/xezekezimewubikalijuju.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/kaukulan_ng_pangngalan_worksheet_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/21000162328.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/98416812863.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/xusovubadazuxuvovikusanez.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/92896681447.pdfIn PDF document text
    • http://jidowadosul.epizy.com/b._ed_exam_form.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/email_format_to_apply_for_a_job.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/the_writing_process_worksheet_elementary.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/cms_sample_attestation_form.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF00 5456 bytes
SHA-256: 585b4b3c55b1f9f8ae6aea628bd1a2078a13614bc0c16cb7c058e2267ce4a7a6
font_01_sfnt_off0000f17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17B 10720 bytes
SHA-256: 4d16dffced54e190e46267eae6b7e4bc8b131ed9788b2360e7217c1480c9f994

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