Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ad082b2494167c…

MALICIOUS

PDF

72.2 KB Created: 2020-12-21 20:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d2a713ffa024c9cf355a2c3a404a0acd SHA-1: 3a1bcd5531d15f03b093a55cb1466af9f476b54f SHA-256: c8ad082b2494167c0711a4dcbf5bfd1e114ed5b5ddbabd0a6eb2261e9e7a7633
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 0.9997

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/strik?utm_term=scratch+carnival+scratch+match+game+cast PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f89073d3a147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454287/normal_5fb9da9ecc75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f96fe245b8d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366350/normal_5fcca20d96977.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5fcf3252b917f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392210/normal_5f99407c5b813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425256/normal_5fbee336ca050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_5fb5539a10437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5895aec917750a3f71e5e/t/5fce41bb33187724c41e86ab/1607352763991/what_age_rating_is_game_of_thrones_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/387125cf-59e6-4fc1-9da3-e0f19a6478b5/austin_kleon_steal_like_an_artist_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd29b3c66bff209e7fbc61/t/5fdd7533459323513bb7bafd/1608348981131/25197746010.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf6b08bc8713fe6fd31bb/1606219446688/zazina.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_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 5376 bytes
SHA-256: 5d84d6cf90eea90614c99c737c94453a77bcdc905a9fa186edc30150be882243
font_01_sfnt_off0000ebe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE7 11696 bytes
SHA-256: 620934c963ef5f745f9ab35932880b039bf1d561e68d1e852b728435add8f2ca

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