Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0483ee9d10b90ba…

MALICIOUS

PDF

75.1 KB Created: 2021-03-01 12:19:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 70d5ae97ea55e26c98397355d3d0e07b SHA-1: 1d1a356af338ec12f1a5a94b6b0c28db8c93d89e SHA-256: b0483ee9d10b90ba6a55b683f71a32f2c5e422bc91825fa5f4dd2edb13533f47
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains an embedded URL pointing to 'https://zajinet.ru/strik?utm_term=what+should+an+18+month+old+be+eating', which is likely part of a phishing or malware distribution scheme. The presence of PDF-specific heuristics further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=what+should+an+18+month+old+be+eating PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384839/normal_5ffb45327a8d8.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jfsMYP6/kebozugixafi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478683/normal_6011f5c390cb8.pdfIn PDF document text
    • http://jurojegame.getenjoyment.net/wovobatupekeluw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487187/normal_600b653daeb89.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/the_game_awards_voting_results.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/98707170796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427781/normal_5fce0fc13d7d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459341/normal_5fdc72ef4f530.pdfIn PDF document text
    • https://cdn.sqhk.co/wepaxuwelusu/chi7fif/find_my_phone_number_iphone_11.pdfIn PDF document text
    • https://cdn.sqhk.co/satofapo/ajciaif/jikokatuvum.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/h0hahhQ/36044829013.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5fe8d084b5712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_60168fbf15705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_60248680f02e8.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/ihihleP/68411725796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374203/normal_5ff4e364d05f5.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/kagedatabujo/2124347889.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/bluestacks_android_emulator_review.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/today_weather_report_jabalpur_mp.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_off0000e89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89D 5544 bytes
SHA-256: b931f1d12f1774faac5a480c98b80f064667f09d14fc4354dc24de10c30d10a6
font_01_sfnt_off0000fb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5C 10308 bytes
SHA-256: 67d9a6bebe9aac400580020f44ef67a3891c7df2dfe04a07a944bdbeb3cd4836

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