Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfeb74bcc56e5807…

MALICIOUS

PDF

65.6 KB Created: 2020-12-02 18:16:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4ffa1744aef8337beb92863331688a86 SHA-1: d29d58e1ad098fa2c742a2ac71ce539a085860c3 SHA-256: cfeb74bcc56e5807fed3a8b60e0c908bcf95b6e1ea6c56bd430f603cac0c419f
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-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?utm_term=polaris+snow+plow+parts+diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426063/normal_5fc52f604e49a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501201/normal_5fc672c2516f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_5fb45bdbb4ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f97d255b345a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380694/normal_5f9ed50fab8f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408476/normal_5fb8441970066.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454301/normal_5fc6ad0c2b37b.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/5fbce344be7cfc36344e8aaf/t/5fbf50ff5147b1480429d48b/1606373631544/mododixapepinabodujolog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4edf95f5-2786-4e60-8579-d0cc1193200d/rubexuwagevezotenab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5330d022-0730-4425-b44d-2ddfe1dc1009/fifty_shades_of_grey_download_vidmate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1eebf8b-674e-411d-b78e-6603dc247f5f/towaxowajimutimozij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5bf0a2757459be32ffe/t/5fc582443c6ccf69f31af877/1606779461533/star_wars_republic_gunship_lego_instructions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc545c33dfdd95b60f1f620/t/5fc796597995075abde9169d/1606915674703/minecraft_servers_ps4.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_off0000c742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC742 5372 bytes
SHA-256: 3f4c761a19ee0cbab8d94633216ce2bf777cef9b21192d2a6c0119b3cdfda8d3
font_01_sfnt_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 9500 bytes
SHA-256: fae5b8fa12ecd2c0485b21573b139baf61d96011ee7d562cce77b98fb8afa143

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