Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3231bfe0e7a066f…

MALICIOUS

PDF

74.3 KB Created: 2020-12-25 22:03:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4353a45a5707a4e7ddaa50f2098434fe SHA-1: 642ca2623a3f69f95c3fe9a067cbab86f4f5afd1 SHA-256: b3231bfe0e7a066fd168baf175026677a8d7ac8001ce3e12f489ddb8f1996134
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to deliver a phishing or malware payload. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit vulnerabilities or trick users into visiting a harmful site.

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://traffset.ru/strik?utm_term=how+to+play+solitaire+in+your+hand
    • https://cdn.sqhk.co/vibifexode/ijajiif/nakodifubuvunegapib.pdf
    • https://cdn-cms.f-static.net/uploads/4408713/normal_5faeeb1395e83.pdf
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/lazilamel-golewaxaxok-zuxojupevoxat-xisowir.pdf
    • https://cdn-cms.f-static.net/uploads/4447877/normal_5fd8334ded431.pdf
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5fa7b1d0a2a20.pdf
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5fbd5628ae59d.pdf
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5f9d7b796694a.pdf
    • https://zavebunerug.weebly.com/uploads/1/3/4/3/134358754/528d2b630.pdf
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5f8efe1000cbc.pdf
    • https://cdn.sqhk.co/vuwibagula/Aqgiia5/99508377516.pdf
    • https://boxagotogod.weebly.com/uploads/1/3/4/4/134491964/a876efdae5b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e822.bin
40a3cd45a02a33798818656fee1adadc9518b2021f5c1bb742d6a96acc4c6188		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE822 5200 bytes
font_01_sfnt_off0000f9dc.bin
35057eccd11d12e52d3b3f7773ada02382209724ed21a92437c71c3d0e827888		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DC 10196 bytes

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