Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d203d52890a5ba1…

MALICIOUS

PDF

67.9 KB Created: 2020-11-29 15:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1d629e481c918e907fc4ff98701150c7 SHA-1: 90f53772f2a8df569082407154da61935dd01479 SHA-256: 4d203d52890a5ba10344a059c4f33dec2e9646ac9be973d78d4b9773b1864562
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://traffine.ru/strik?utm_term=ceh+v10+study+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5f8ad4d9d9091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5fae8a2185530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_5f925b687372c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5fba3e30bab64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5fa246ca74267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f9d0aa6da63b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424696/normal_5fa0cb3077e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_5f979b027f5ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5f93cf9ea8b0c.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/206295a9-db35-43cf-9d8e-74ee422002ae/voxorumadelafede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9074bf-3779-4adb-9b09-b459ea894383/bal_krishna_serial_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/tisazixumomiseboxuzan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ffb8ab-65b1-4f8d-b892-7cbb3a5fb332/sue_sue_heck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/717561dd-86c5-4198-ab19-9a45d73b578b/12901316198.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_off0000cc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC45 5224 bytes
SHA-256: 9857e96901e46645abd415697781fbe8f0fa68a45d71dc2eb1c2f1d3452ce8f7
font_01_sfnt_off0000de29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE29 10692 bytes
SHA-256: ad0217d6f927a30cf6246d70fe8b70c12064ba72fab6e2e080c6c9d5df426fee

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