Malicious PDF — malware analysis report

Static analysis result for SHA-256 56744d12e3b4172a…

MALICIOUS

PDF

78.5 KB Created: 2021-02-19 02:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 90169a9ad94b70be5be6c59aedac40bf SHA-1: d226217ca479680178846e780207c7d58375bd2d SHA-256: 56744d12e3b4172a13dd94e449e0a28ed584290c3ebe170ad05f6cfb0baede03
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting a phishing or social engineering attack vector.

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://jacksth.ru/wix?keyword=wow+tv+listing+augusta+ga PDF link annotation
    • https://cdn.sqhk.co/kavuluxaja/KWhjhfJ/55575111430.pdfIn PDF document text
    • http://uuuuull.space/69969926620nzp3d.pdfIn PDF document text
    • http://graatorama.fun/zemana_mobile_antivirus_apkpurexakua.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/v2hbTCo/bosodevapoluzoxeg.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/ihEdgfY/stickman_school_run_apk.pdfIn PDF document text
    • http://womenit.space/beata_ana_catalina_emmerich_librosx7wkm.pdfIn PDF document text
    • http://simkosa.website/popasosalilbly6n.pdfIn PDF document text
    • http://detonic-ro.website/kiboms64t2.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/somamere/android_backup_to_pc_software.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/cavite_mutiny_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/xiaomi_android_one_android_pie.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/reporter_anjana_om_kashyap_biography.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/xelewuke.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/13721159482.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/traxxas_vxl_3s_esc_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/xawinanizubabubolizovepuv.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/disajowodo.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/76734273121.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/macbeth_reading_guide_answers.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_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 4924 bytes
SHA-256: 4acde18c0176945f9445395938a4017b6f22f9bbac540c8d9d3cc3c2e7873f86
font_01_sfnt_off00010233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10233 12840 bytes
SHA-256: be27a5fb35c7cab72e058cfae70525368ef60a8856bf05d395c1dbbec235d9e8

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