Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c469264218a8fb…

MALICIOUS

PDF

73.5 KB Created: 2020-12-25 11:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68cb528fec77d597b1e2dd34d75de363 SHA-1: 2781a16fb7d4a63e6a3ae7c0fea94658162cb49d SHA-256: 46c469264218a8fb13d5c49bef30235fdeffe37b5e25b0118665b5541c73b93b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The presence of PDF-specific heuristics and embedded artifacts further supports its classification as a malicious PDF, likely used as a lure for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://traffnew.ru/strik?utm_term=modern+age+comics+worth+money
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5fa726b26a7bc.pdf
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5fdaf7fbcd0e9.pdf
    • https://static.s123-cdn-static.com/uploads/4421468/normal_5fc8eb6f319df.pdf
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5fcc44a9d8951.pdf
    • https://cdn-cms.f-static.net/uploads/4452846/normal_5fba43f35a9ac.pdf
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/52bb1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/towakog/timasinekunakolifu.pdf
    • https://uploads.strikinglycdn.com/files/3f747003-4e64-4ffb-8af4-0de00d3c9ff1/summer_waves_pool_vacuum_plate.pdf
    • 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_off0000e332.bin
dcf38531f48c4e9271122a85278c10bccdb793e95487b308f4e8c1edca4abd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE332 5520 bytes
font_01_sfnt_off0000f5f2.bin
61ef3169e0041f821631e03b613c70640c18c50b82f905127772d720bb2eb203		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F2 10576 bytes

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