Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85938d1b1751d9a…

MALICIOUS

PDF

83.2 KB Created: 2020-12-07 15:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f1adf495fd58968166573320108762dd SHA-1: 1ec0d4f321754bfb92e4d0a55f1d4bb3a5935c07 SHA-256: b85938d1b1751d9a2e5060fb1dc90bb84c9abbf49b550e5c6933f3ac0824bd36
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://traffking.ru/aws?utm_term=cultists+endless+legend+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5f9f3efff3276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f970ccfc2a47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_5fbd3ef166da1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_5f9adfef8d34b.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/tadevewuju/cations_form_when_an_atom_loses_electrons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ee878b-642b-4cff-aa58-7e2113cc25bb/sufixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d0c910-5fb2-4e0e-a062-cc97287829e5/3995896545.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6763d68612547ed8438d4/t/5fcd340d6f0099009e6e5619/1607283726950/microsoft_planner_project_portfolio_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d86bbce-adfb-42c7-acd0-a83f75264cc7/11698045261.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/satabikofegatobozuzat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/532213fa-29c9-4e42-b4b4-a01df597c515/duxefozudataxifeluk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d019b1ed03538d15b64/1606372615068/kolepabenojopodomodupod.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_off00010bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC3 4592 bytes
SHA-256: 1c0af71064077f26e638aa5cb3122490ad974fa398c0649c123142c6433b4da5
font_01_sfnt_off00011b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B70 10800 bytes
SHA-256: 20288b9a083f66e9f700f60e4c9f5f16af22748677bb53ebba8a87c6a25ef7ac

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