Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd65a81a8e86a9e…

MALICIOUS

PDF

78.4 KB Created: 2021-02-14 13:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 16ddffae78e9ee1274c0cdc19951d94d SHA-1: 44584a511f046a6d98cb829799e9bcb939882168 SHA-256: 0bd65a81a8e86a9e38e4b7efb053983fbf2283e523eb200cd542f3257b8584c9
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=laws+of+simplicity+book PDF link annotation
    • http://rumokerejimo.iblogger.org/12176279681.pdfIn PDF document text
    • http://rarebuzoxexovom.22web.org/basic_linux_shell_commands.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gajikefobazute.rf.gd/fitbit_inspire_hr_fitness_tracker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/nidugi.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/diversey_sds_sheets_canada.pdfIn PDF document text
    • http://tonubugiloroluv.rf.gd/diabetes_mellitus_journal_case_report.pdfIn PDF document text
    • http://busezax.rf.gd/cricut_infusible_inktm_transfer_sheets_leopard.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/womalegevokapoj.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/26537234954.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/72778867894.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/bavesizowixisilovedovagaz.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/best_algorithm_book_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/atopic_eczema_treatment_guidelines.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_off0000f3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D2 5404 bytes
SHA-256: d364b37eee742ebca8f633e44af7ec9835c5807785dc6dfbaff3fe1b71ffe9df
font_01_sfnt_off00010648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 11704 bytes
SHA-256: 311d460516e9f05449a755a81015c6a70c01963b7ae704b756cd814b4ccd5eb6

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