Malicious PDF — malware analysis report

Static analysis result for SHA-256 3968e1f8a2b7adbf…

MALICIOUS

PDF

59.7 KB Created: 2020-12-31 03:31:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2c538f5d29e9244417c0d57a2cd52af3 SHA-1: a6f3b75df9b71c9d21e68e15bdf4bddc956e009a SHA-256: 3968e1f8a2b7adbf28d96d64bb486ab4cb5131d775b8a5d1a7481961a3d1a490
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged the document with high confidence. While no scripts were extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware delivery attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9685

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=retract+battle+royale In PDF document text
    • https://cdn.sqhk.co/zafupusapun/FhhSgdr/muxexoxigezoxibigoxowepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5fe64bf780ced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462736/normal_5fcc0262879b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490116/normal_5fcdc6094976b.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/jgd8FHu/download_game_naruto_ultimate_ninja_blazing_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/8ihbjjs/ireland_games_euro_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/lotazoza/hYgjiiB/pokemon_go_jolteon_without_name_trick.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b13272d-ab79-472d-9c98-95facf1a8c3c/bepaka.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/biblia_hebraica_stuttgartensia_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e1727a-4058-403e-ab59-cdf36ca20254/schema_boite_a_fusible_transporter_t4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/273f4ec8-ffd5-4aa6-a747-146d90135871/puwijiwij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32268376-36ff-40cf-883e-a045d3d985d1/kuruke.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE48 4864 bytes
SHA-256: c0bc8e7c3a01d448e996cf691595079cc56ff1e3101b0e8031b6c4e488304854

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