Malicious PDF — malware analysis report

Static analysis result for SHA-256 83abe0b3d8d9ec25…

MALICIOUS

PDF

75.0 KB Created: 2021-01-13 19:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 56367913d6e55e63dc5bb27cfb97203e SHA-1: e3a87dc2b1304b28f9177db00a890d6081952670 SHA-256: 83abe0b3d8d9ec25b017ec475ad461472ebc3259daed6bbfb600004ab7cad27c
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=the+16+personality+types+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5fa57ebc76d6c.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/gPjhowS/car_simulator_veneno_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5ff4064dbf498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444644/normal_5ff7f7355e2da.pdfIn PDF document text
    • https://site-1179415.mozfiles.com/files/1179415/geometry_module_9_test_review_answers.pdfIn PDF document text
    • https://site-1174138.mozfiles.com/files/1174138/facebook_app_download_apk_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/jozojonujaj/bgcTjfU/4x4_off_road_rally_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/ihheNhj/dudixisiniwodasilazefu.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/zebarufuridorur/basic_service_agreement_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/89440676996.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/firosovuxomuzoz.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5480 bytes
SHA-256: 069da2460b540e2b3a6e8acecdd5dbb263d86fe1125bc91d5a1bb488032552b0
font_01_sfnt_off0000f21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21E 14084 bytes
SHA-256: 7eb432a609a02f69a548ff270d2fb1cae2422ed3e8ae52369c2a38f8971a0be7

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