Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fc7b9c97fab909…

MALICIOUS

PDF

80.3 KB Created: 2021-03-07 23:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0ca2541e1dfba8b5162dba90c40a6973 SHA-1: 976308f452ab32ec765071853d405ac13c3b5259 SHA-256: 46fc7b9c97fab90914ec74c16b6d4aede38a0ab963fc167f2ecd9d42f44ae7e9
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being https://kuzutuzo.ru/strik. The ML classifier and ClamAV detection strongly indicate maliciousness, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a Bible query, aiming to disguise the malicious intent of directing users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=what+does+the+bible+say+about+milk+and+honey PDF link annotation
    • http://gejesixave.scienceontheweb.net/how_to_fix_hp_printer_not_picking_up_paper.pdfIn PDF document text
    • http://bupro.asia/dataxineliv5mlzm.pdfIn PDF document text
    • http://tebeririz.scienceontheweb.net/43737363564.pdfIn PDF document text
    • http://midimox.getenjoyment.net/25585199288.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/rowagegevaridu.pdfIn PDF document text
    • http://nitesufi.sportsontheweb.net/14661929502.pdfIn PDF document text
    • http://stav-games.ru/muvawibexelorbcsg2.pdfIn PDF document text
    • http://fullpisetc.ru/10233913258p9lox.pdfIn PDF document text
    • http://complerbnp.com/thames_kosmos_gumball_machine_maker_super_stuntslt4d0.pdfIn PDF document text
    • http://zhk-rekord.info/11647911891umjic.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/godewumazek/91966080587.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/27751298045.pdfIn PDF document text
    • http://xemunebo.atwebpages.com/case_study_executive_summary_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/power_and_revolution_geopolitical_simulator_4_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/97722323963.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/vowel_digraphs_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/effective_audit_report_writing_iia.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/redefijoketavako.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/borderlands_1_farming_guide.pdfIn PDF document text
    • http://xezaretidatoro.onlinewebshop.net/ranoro.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/eastlink_channel_guide_sudbury_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/fomovatepapes.pdfIn PDF document text
    • http://bumurulepowele.myartsonline.com/jevewazavabu.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_off0000fe4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4D 5288 bytes
SHA-256: b5cb532c98c4801c315be9cb7a0c350a36676834308684bb675a1e40e18d2206
font_01_sfnt_off00011033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11033 10564 bytes
SHA-256: bbdc23b1668703820bf6f902505e71ca133bc8ff9630d5ce0fd14e1fe81ca349

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