Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dab59c5e27c9c4e…

MALICIOUS

PDF

71.1 KB Created: 2021-02-24 06:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7edee300762d3972e873ff5084cc43d5 SHA-1: 359a3778ae559b94c87adaa5a074d5139cdcb6c2 SHA-256: 8dab59c5e27c9c4e496c65f376d22e3e38fec9d5f844198ff0c33bf4ce10d41e
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 payload. It contains an embedded URI pointing to 'baarspo.ru', which is likely part of the malicious infrastructure used to deliver the payload. The document body, though heavily obfuscated, suggests a lure related to 'life drawing pdf free download', aligning with a phishing attempt to trick users into downloading malicious content.

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://baarspo.ru/strik?utm_term=life+drawing+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/baluwofuk/mrDifkq/wubix.pdfIn PDF document text
    • http://checkmyscore.info/ibm_selectric_ii_valueocblj.pdfIn PDF document text
    • http://reduslim-italiaofficial.site/panic_at_the_disco_piano_sheet_musicb65i5.pdfIn PDF document text
    • https://cdn.sqhk.co/xezexasag/8jewBgc/56785273322.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/egdq4dh/fukenodaxoxazedajasibujo.pdfIn PDF document text
    • http://presentinsta.online/can_a_sex_offender_ever_get_off_the_registry314bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410016/normal_5fcc1a1211f5f.pdfIn PDF document text
    • http://timecodes.net/american_psycho_musical_scriptgousd.pdfIn PDF document text
    • http://tixshopclub.fun/31504504179v7w28.pdfIn PDF document text
    • http://buyfastedcircle.xyz/stickman_dash_hooksvx6nq.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/wegemebufojafak/90986873985.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/yahoo_mail_settings_for_android_pop3.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/aur_ahista_kijiye_baatein_mp4_video.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/administracao_publica_conceito.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/40843173428.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/chult_hunt_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/55378441128.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/xinuj.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_off0000d7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A2 5064 bytes
SHA-256: 9b210bffdd6724990567943db87388a442951635c0f162aef8b2b023a848cfe0
font_01_sfnt_off0000e909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE909 11328 bytes
SHA-256: 10d7ed02f0d949bf8f057f725fcdd3f2318aca2bbe14105bd30f1f16e3a9dd70

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