Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d45ca72cbb39f2…

MALICIOUS

PDF

78.9 KB Created: 2021-05-04 13:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9163214d6fb4e53858fd8ad2c99a6861 SHA-1: ea791f3b53564f33353a470c7cd22fc4ba145f78 SHA-256: 04d45ca72cbb39f2707308628e86678a443e68c6061dfad77ef600443f505d64
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a deceptive lure related to a technical query, suggesting a phishing attempt to trick users into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=how+do+i+program+fios+remote+to+samsung+tv PDF link annotation
    • http://kexedeziferu.sportsontheweb.net/ork_battlewagon_instructions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492918/normal_603028cf935ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486994/normal_5fe7c089a887c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481993/normal_601f103f45486.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/sOq7iaQ/werewolves_haven_rising_achievements.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/dCXhdgf/longboard_simulator_3d_skater_rushing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458148/normal_6013c69fd82de.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/hijcJf5/39447786472.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/tosego/money_envelope_template.pdfIn PDF document text
    • http://suzifoki.myartsonline.com/define_urban_development.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/farugomuwabunadovileleg.pdfIn PDF document text
    • http://monudoxufanexax.rf.gd/28276145751.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/tufoxazusuxafeledefutedum.pdfIn PDF document text
    • http://saxogif.epizy.com/belhaven_hill_school_inspection_report.pdfIn PDF document text
    • http://somolif.rf.gd/perforated_sheet_manufacturers_in_uae.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/31633025554.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/chrome_apk_for_pc_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/sundarakanda_telugu_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/1730640040.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/69376352513.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/valvoline_ignition_program_motor_oil_101_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_off0000f7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 5444 bytes
SHA-256: 31c825cbbd42699dc0677a18bfea4a314ed48623deee4aa28b67734f8952922e
font_01_sfnt_off00010a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4C 10604 bytes
SHA-256: b8fc4388c8432b2bd30814b15fb8f15a3f8f15a226810cb17cf8573959e5e1fe

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