Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fb943785d4f2bd…

MALICIOUS

PDF

63.9 KB Created: 2020-12-23 00:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 50ead9cf90ac52aa00f14b819a6d0765 SHA-1: 5f4d76b8c3b56fd2f8bc7e0bab2b7b126dd4cb22 SHA-256: 96fb943785d4f2bd43ab69a7dea34863cfbbfe7dc0129361383cb2e8a9a1d374
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing campaign. The document body, though heavily obfuscated, contains metadata related to 'Steele Canyon High School', suggesting a targeted lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/123?utm_term=steele+canyon+high+school PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/film_animasi_jepang_terbaik_sepanjang_masa.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/32366012667.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/certified_ethical_hacker_v10.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/medicaid_rates_for_aba.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fd1329adca0604010300205/1607545498457/goat_simulator_mmo_simulator_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/fleece_fitted_sheet_dunelm.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/kabiwesisisokaxekir.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/werbung_blockieren_android_app.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65777e9fc3622d5470b25/t/5fd719ff481cfa31ade02e93/1607932418195/bharat_forge_annual_report_2016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe19caba3ed237ff3d59fb6/t/5fe26eae180c8b054946b862/1608674991006/mazurka_chopin_piano_sheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e92a0a2757459be2ed0b/t/5fc1814d7acac6192af9ccdd/1606517070314/pasixof.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_off0000bb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB50 5168 bytes
SHA-256: 4132f221c9dc9c0e94471a764cb4bc965cc6b1966a1f78608e50d51512dbe93f
font_01_sfnt_off0000ccef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEF 11732 bytes
SHA-256: a11a67b9ed76df145e8e2d8fa2336ffceaffe380f019940a3e4bc7aeba65cb4a

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