Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a50dfb41d418b4f…

MALICIOUS

PDF

78.4 KB Created: 2021-02-27 16:37:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5aa494f03abec0721be833e14628be72 SHA-1: 3a22c59ef22ea47e23df32bcdb4310c12c2cbbbd SHA-256: 4a50dfb41d418b4fa8dc07de2d8f73c0ca0f88d030d7b4fad6b54dc387a5ae47
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://nipisod.ru/award?keyword=panasonic+kx-tga20+user+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449769/normal_5ffe49fdb1eec.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/olivetti_underwood_lettera_32_typewriter.pdfIn PDF document text
    • http://okstore.info/wamesuwidiwinavibetakubixep9ez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5ff717775f937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481055/normal_6007579c71707.pdfIn PDF document text
    • http://idealica-ufficiale.site/college_enrollment_verification_letter_templatewbnf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424630/normal_5ffe709e59033.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/TiaOubu/falling_ball_game_y8.pdfIn PDF document text
    • http://remont-pc.website/74739681270hsgo6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416919/normal_5ffb983beb9cb.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/polk_audio_soundbar_remote_programming.pdfIn PDF document text
    • http://rajedat.iblogger.org/accounts_format_for_charities.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/kant_critique_of_practical_reason_cambridge.pdfIn PDF document text
    • http://ziwusis.getenjoyment.net/how_do_you_calibrate_a_hayward_salt_system.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/6uaphcP/weekend_only_customer_service_jobs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mozifawa.rf.gd/manual_de_urbanidad_y_buenas_costumbres_carreo_resumen.pdfIn PDF document text
    • http://girofili.myartsonline.com/wogivixunat.pdfIn PDF document text
    • http://vizijikiwoler.rf.gd/adoptable_storage_apkpure.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_off0000f510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF510 5560 bytes
SHA-256: 8b5eb74598d7d00edd2edf892a99d06fd97135b20ba6cfde8c35c41ff3cc5795
font_01_sfnt_off000107f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F3 10660 bytes
SHA-256: e370c8232eadd4b4ab62131dfc61ad69aaa65b162522cf0789d65916b4851741

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