Malicious PDF — malware analysis report

Static analysis result for SHA-256 10fc23649c4fc0ce…

MALICIOUS

PDF

67.5 KB Created: 2020-11-09 20:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6b820ae06da27393c8be858b30596702 SHA-1: 59e0c99a72b4cf9bd8daf5ed4a8a36efc045500c SHA-256: 10fc23649c4fc0ceddd84e57f63b0ac2aa1e1a744d5abb5cb35a77633f8e7b31
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 0.9981

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://traffking.ru/123?keyword=demons+run+full+poem PDF link annotation
    • https://gowosupene.weebly.com/uploads/1/3/4/4/134489802/xevuxo_gipujazarix_genunixetak_nadaregokago.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/kasubijugam_komilawonifed_demukikafe.pdfIn PDF document text
    • https://mamotuzukaw.weebly.com/uploads/1/3/4/4/134438076/7846475.pdfIn PDF document text
    • https://kutolimog.weebly.com/uploads/1/3/4/4/134435461/kogevegubedowas_veluri_nifabexet_modigajisajigob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e53bb37-b2d2-484e-9a76-cc6ab221eab9/52002604102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa937017-1aa4-48d7-9e79-c927c439f015/wopopaninedabativex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12af0277-1be3-41ab-ac5d-fd256a9d34d6/westwood_t1200_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3e7799-42f9-4cb7-8f20-56e58e6228b1/joseph_campbell_occidental_mythology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d4fd19-9688-4f47-9412-3ab2422c1c0c/penusivaworagonegevi.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_off0000cf5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5F 4836 bytes
SHA-256: 399d41c006bef392e2707b50d4479f5fb9052e84ccb19140f133ca676764d138
font_01_sfnt_off0000dfc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC2 9896 bytes
SHA-256: 06033e142f6072114e474a0590cbd18217a9381d5d15e04287cf4094b54c80f4

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