Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eeb99cc8814b35a…

MALICIOUS

PDF

80.1 KB Created: 2020-12-24 06:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e648724b37932cafae1bf90142a09855 SHA-1: b7a13d9816133b646aff7b331d56fa52cefdadcc SHA-256: 2eeb99cc8814b35aa5cd0a9d5b880f46ff93085d16f44c2e4ec12dd726de72f2
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 0.9973

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://trafffe.ru/123?utm_term=microscopic+anatomy+of+skeletal+muscle+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478398/normal_5fd89b63237d9.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3718456.pdfIn PDF document text
    • https://cdn.sqhk.co/xevuvuxene/GrOijjf/sea_animal_coloring_pages_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/ezjaK9K/benuba.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwovodegi/jcfgcia/rafin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391907/normal_5fe3a0afda214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f8e869678dd6.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/numunenoji/autograph_film_hd_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/teen_wolf_season_3_episode_7_free.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_off0000fcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDC 5520 bytes
SHA-256: 12a4fc9922e30dd2633b1da35b74aca7f45fcc03e3f4b6b9689d7d492ae32f6b
font_01_sfnt_off00010fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA0 10668 bytes
SHA-256: 589cd888888ef4aace2e6d8b061be24383a18839dc4ff51ccad1c6ca78b4828d

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