Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cc368995fab9a1…

MALICIOUS

PDF

67.3 KB Created: 2021-02-16 21:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9adafe06fc8d574c8711c0c54e9a56e7 SHA-1: 2c9b89da821996eaa45c1b09cb78f6a3340f7168 SHA-256: f1cc368995fab9a1fef73f2fbc93da6fbecb766f73c7e098ad2d071366a0ad15
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://seumenha.ru/wix?keyword=drawing+angles+with+a+protractor+worksheet PDF link annotation
    • https://cdn.sqhk.co/tarudifirew/PiegfH9/bevokariri.pdfIn PDF document text
    • https://cdn.sqhk.co/rarinuva/ggjdheZ/sites_in_vr_app_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/zBPQibC/24865121089.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/dIYjhhi/84906349090.pdfIn PDF document text
    • https://cdn.sqhk.co/jerowerar/dBuFLhb/legolegopasajawelutaxen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485576/normal_5fe79eb60b65e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_5fd0dc7744081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_601a71bf1456f.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/hpV7CmM/zizezuvimexozedojufulaza.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/gofiguj/26715668863.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/vaxizu.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/microsoft_phishing_email_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/2791644122.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/jitojukutefudunixug.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/xomilis.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/ios_12._2_beta_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/21521511598.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/financial_report_analysis_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/almacenamiento_en_la_nube_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/target_threshold_full_fitted_sheet.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_off0000c898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC898 5352 bytes
SHA-256: ccbf79f46ceed2ef4bd323ac75ea507c5505a2ef5817c23f28e39203aabb22c7
font_01_sfnt_off0000dae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE1 11404 bytes
SHA-256: 231a3d2ea867a4907d499e09a1660d7cdc964324be4548b613d4747f3467ddc2

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