Malicious PDF — malware analysis report

Static analysis result for SHA-256 817068404b7cd9e8…

MALICIOUS

PDF

66.1 KB Created: 2020-12-15 07:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5b7166e1d53999bc7e8555d13ac83ccb SHA-1: 3bc339497af358435168cf00abc1587ee516fbe5 SHA-256: 817068404b7cd9e881c76307ac985c6a2941a5d6313f057dbe70629a565ce37a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit user interaction via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/strik?utm_term=dance+studio+elizabeth+street+melbourne PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5fa5e762cbbe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f874fe6d094c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5fb59dffafea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f877023c0707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416802/normal_5fbcf5a8c0a30.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/5fbf527ce6d49a06bb889f9c/1606374012800/52312889302.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce50318785af7abc646d9f/t/5fcfa5ee24ae147ef3e6b566/1607443951249/ximawuvegowevune.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e0fba5bc066edfbf0e5c/t/5fca7e7e88018625c79bdde1/1607106174605/word_connect_answers_level_508.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c303a13a450babf35031/t/5fc0ea3ef81c9a2a0cc3ad90/1606478400085/7852455912.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceed69d104e5f152c7141/1606217431809/32553406768.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b0585426f52a30e09280/t/5fd1de76b91f50015eef8921/1607589495951/rabunovutufubuzebalexajaj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D6 5368 bytes
SHA-256: c5e5ac96f32c99ecf2452ec369532cc79c33482cd0966ef0cf7855e68cabc94d
font_01_sfnt_off0000c2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2EE 10588 bytes
SHA-256: 873ce2b399836e74c08bac0f790d6222b304c4708d64d2c416453abf4dabe138
font_02_sfnt_off0000e608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE608 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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