Malicious PDF — malware analysis report

Static analysis result for SHA-256 246e8a55baebe848…

MALICIOUS

PDF

73.4 KB Created: 2021-03-20 03:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62555b9f3cd4843892eceb1b0f297014 SHA-1: 9ae2f2da0bc5ebaf4658b58853bc34ff25d86f10 SHA-256: 246e8a55baebe848b7bb0ab3a6606086301dda65e663776b5b939b60410f9196
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, vilenefex.ru, which is likely used for phishing. The document body, though heavily obfuscated, contains references to 'Betway app uganda' and 'wkhtmltopdf', suggesting a lure to a betting-related scam. No scripts were extracted, but the presence of an external URI strongly indicates a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/123?utm_term=betway+app++uganda
    • https://cdn.sqhk.co/rigizisojix/jj3f7l4/full_harvest_moon_october_2020_meaning.pdf
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/5767876.pdf
    • https://cdn.sqhk.co/sisowufabo/gmO7Bvs/leratesiruvatumewek.pdf
    • http://eliyalte.com/bonaventure_cemetery_self_guided_walking_tourik4lo.pdf
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/2117024.pdf
    • https://cdn.sqhk.co/letarezetap/Cm9jfWu/13324013923.pdf
    • http://bristol-yalta.run/chapter_11_section_2_reteaching_activity_imperialism_case_study_nigeria2ncgf.pdf
    • https://xemizumelisiga.weebly.com/uploads/1/3/1/8/131856695/98a2ad052284a09.pdf
    • https://nelejezubifub.weebly.com/uploads/1/3/1/4/131406077/negikaw.pdf
    • http://copyrightsafetyhelps.com/lubujarumosazajamutuc680.pdf
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdf
    • https://cdn.sqhk.co/guvevifowo/CR0khjp/gekukoturidoluv.pdf
    • http://study-english-05.site/fulodutekugiwifememaj2mjfc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dedinavesute/sample_employment_contract_in_kenya.pdf
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_584ba0677d684d6cbd04e8411b650a63.pdf?index=true
    • https://s3.amazonaws.com/fokapikow/27580749212.pdf
    • http://tuwafexom.epizy.com/cbse_class_12_date_sheet_2019.pdf
    • http://sikejilewiz.epizy.com/wordly_wise_book_5_answer_key_free.pdf
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_775519e4c612405f9075e1234ad8eecf.pdf?index=true
    • https://s3.amazonaws.com/rejiner/american_war_films_2018.pdf
    • http://sonasekofuxix.rf.gd/bodyfit_by_sports_authority_exercise_bike.pdf
    • http://bolopanezodubun.rf.gd/54896337577.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfe7.bin
6a500a3c235363eab1f5665a8304a81f2ed6ddfc512c5c09b187b89186c34e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE7 5064 bytes
font_01_sfnt_off0000f157.bin
599ff6b38306fb16e83e14c6f2565b7c535d429e3ac5e756e47cf8cad3e85229		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF157 10816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.