Malicious PDF — malware analysis report

Static analysis result for SHA-256 52343147c1055cbe…

MALICIOUS

PDF

70.8 KB Created: 2020-12-27 04:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 4a4e44212c3b5f261dcb49e000901718 SHA-1: 77a7e05486cc71fb9202f5ca630d7e150338dc19 SHA-256: 52343147c1055cbe758a65b39ddd89467a778ee500c3da00edaf8592349b07c4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. The embedded URL 'https://traffset.ru/strik?utm_term=democracy+jeans+size+chart' is the primary indicator of malicious intent, likely serving as a phishing lure or a download redirector. No scripts were extracted, but the PDF structure and URL suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/strik?utm_term=democracy+jeans+size+chart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410222/normal_5f9f6351e8862.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/UFotuJb/fudawu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368223/normal_5fdf64a1df80c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5fcb248be1152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f984f424be6b.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/votubukaxogilix/prozac_nation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/wusugobudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a80619-6a50-4ad1-bc28-3e3db9e13a8b/99960532667.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/john_wick_3_streaming_hulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b55808-b180-4776-9ccc-75bcd56f4002/vandana_shiva_libros.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_off0000d89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 5232 bytes
SHA-256: af122731c3c466a500136a83910039411e73f31057d5ab1ba2e1877aaa19aa11
font_01_sfnt_off0000ea57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA57 10532 bytes
SHA-256: 53592a38e48591fa8b619b766edc98d3a641aef9bdf848ca5cd845bcd3964af9

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