Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc06b83bb8d9221…

MALICIOUS

PDF

79.8 KB Created: 2021-01-10 11:52:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5538235ada9c79dfc3e3e95456088bf3 SHA-1: 39b83b7c679e42d9465e4b586cfc27bde74cfe72 SHA-256: 2dc06b83bb8d9221c676c5b37e45474e6376aa0d330e94b1f27e07e819a1f946
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://traffset.ru/aws?utm_term=maple+syrup+urine+disease+management+guidelines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413122/normal_5faa5951ab0c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5ffab6858e625.pdfIn PDF document text
    • https://cdn.sqhk.co/munemuzabuk/gAhf2jg/define_hero_essay.pdfIn PDF document text
    • https://site-1174086.mozfiles.com/files/1174086/orange_tree_resort.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413835/normal_5ff1984c5520e.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/ihiehhX/character_creator_3_fantasy.pdfIn PDF document text
    • https://site-1168007.mozfiles.com/files/1168007/vertebrates_and_invertebrates_worksheets_for_grade_4.pdfIn PDF document text
    • https://site-1168114.mozfiles.com/files/1168114/71629356917.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/kesumasaka/templates_dashboard_bootstrap_4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/triathlon_buyers_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/ninonefutaxesesixumatanig.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_off0000f966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF966 5384 bytes
SHA-256: da90eef9bec99c4ed954838850c633f147302df7ea28dd697cfba5bc399c4af0
font_01_sfnt_off00010bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB0 11696 bytes
SHA-256: a2ef61e2cce2f199d78312357e27384588f588c2e76783d0ff197514ee61ce15

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