Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cae75d020eeef40…

MALICIOUS

PDF

100.1 KB Created: 2020-12-09 07:09:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 671880509f8587ef3d24b13679377d2f SHA-1: 26aa0fe02cd52eca3af6f6c84b8886449fea48f6 SHA-256: 4cae75d020eeef4093606dc3e07ac085d2319f95b6865ad1c48018ae197bd15f
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 0.9996

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://trafftec.ru/strik?utm_term=pokemon+altered+emerald+water+stone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495055/normal_5fc70e24edd59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f912225927be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424361/normal_5fc5d9bc6668e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f9b99919830a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5f89ed7c109b6.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/5fbf5d0e9b1ed03538d2954d/1606376719479/port_royale_3_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a846a1b-cd49-445c-aa8a-ec76fec95e1a/87698006768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789a883a-bf10-41fc-9874-f7c6a9d608b0/19788905386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fccf85-723a-4e7d-84a1-7a3127a004de/75786015649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/738585d1-49d9-476d-95de-94325e242e49/kepume.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd06b464a3cc4058a5d7ee/1606223551475/que_es_un_protocolo_de_investigacion_ejemplo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc16cefbda9c57a97c1e406/t/5fcd95535d2e6f3bda56faba/1607308627611/zarujunajarixipux.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59dea6609fd0ee7b1a6c7/t/5fcdcc632bc7884852d5d415/1607322725784/big_bang_btc_radio_static.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf76964be903ae63fd1bf/1606219630765/ib_spanish_teacher_singapore.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB9 5128 bytes
SHA-256: 1ce24eb80020058328e0bca7c11a22df64de42f659667d7d9074458de46a0855
font_01_sfnt_off00015022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15022 2212 bytes
SHA-256: 6a1d55651960e01b6c7319a7ce8d1cb5dbae212f8ebd1e64404c435a1f66155b
font_02_sfnt_off00015a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A50 11664 bytes
SHA-256: 7f0b9fec65af41a5ff9e00638b7117e55e4a9b61d6adb797f7b33bd23c2e8ef5

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