Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e24050aa6ab1f5…

MALICIOUS

PDF

58.4 KB Created: 2021-03-31 17:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1a84c9e2d32e0ed3556e29cf0f2a7885 SHA-1: d349898c033e0112b13b3f9c0f0d716bda8b2588 SHA-256: d8e24050aa6ab1f51be919a08e8a1389663a79ba2eff636ad52787a546c0bcb6
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that mimics a search result for a software manual, likely to trick users into downloading a malicious payload. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests the document text may contain commands or references to executable content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9605

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/award?keyword=catia+v5+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/jalinutaxos/cjaidij/vekoxoviberezazerekivun.pdfIn PDF document text
    • https://cdn.sqhk.co/judebivon/cjhgeUL/waporugesigupidotufar.pdfIn PDF document text
    • https://cdn.sqhk.co/vovigewuva/WitwEic/employee_engagement_survey_template.pdfIn PDF document text
    • https://cdn.sqhk.co/lixijadimit/giicjeX/hoyle_official_casino_games_collection_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/WhezA88/red_nails_ideas_pinterest.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473645/normal_5ff4d2cdada2c.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/e4c5FOE/black_men_s_hair_curly_short.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/HgjhdiJ/snow_mountain_bike_racing_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448550/normal_5fcf247392f73.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/kezavilageg/ggqdjct/zodibevaremusib.pdfIn PDF document text
    • https://cdn.sqhk.co/tulazofava/jhiiejc/subway_runner_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/e8hy9hc/panchakanya_smart_application.pdfIn PDF document text
    • https://cdn.sqhk.co/widexerun/he7VPjh/arbor_day_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/HgjhdiJ/snowIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/da1bf718-0dba-4443-97a7-eef364b77fa4/lanemokedososirut.pdfIn PDF document text
    • http://pimibini.epizy.com/yellow_school_bus_pass_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6985717-b0d1-4416-80f3-46c54491ebf0/47743080674.pdfIn PDF document text
    • http://vokozebutiri.rf.gd/11904991581.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE5 5000 bytes
SHA-256: ac07dfd6ebdd5c5f8add5f58ce383f9602f4a6eb00e40acadae28be6aa02327b

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