Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaea633d2d4e42e0…

MALICIOUS

PDF

51.6 KB Created: 2020-11-12 23:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc3fbab169e4ba34207f3c6fc0cf0853 SHA-1: 4bc1a6ec2cd7d3d43bad82d5207c96aaffef31ea SHA-256: eaea633d2d4e42e0b5a9f1c4c74303d729155bd555a78c949b712ee9beb7ccc7
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to an encyclopedia PDF, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9544

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=godwin%2527+s+cabalistic+encyclopedia+pdf
    • https://cdn-cms.f-static.net/uploads/4383147/normal_5f9816b71c253.pdf
    • https://cdn-cms.f-static.net/uploads/4450421/normal_5fa000d78c9e2.pdf
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fa054da0fdb8.pdf
    • https://cdn-cms.f-static.net/uploads/4412899/normal_5f9f8fb289be1.pdf
    • https://cdn-cms.f-static.net/uploads/4412761/normal_5f99d29777b7d.pdf
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f8e350a2d3c3.pdf
    • https://cdn-cms.f-static.net/uploads/4446499/normal_5fa5b78bd9643.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pusori/mituvewiredo.pdf
    • https://s3.amazonaws.com/sojaxub/borapaw.pdf
    • https://uploads.strikinglycdn.com/files/ef2d9e9b-4097-483e-84db-be71666ed6da/google_developer_android_training.pdf
    • https://s3.amazonaws.com/susopuzupure/kijata.pdf
    • https://uploads.strikinglycdn.com/files/3d407e96-057d-4efc-807c-8fe45d28d23d/80433187695.pdf
    • https://s3.amazonaws.com/jamokaroxoj/30112025624.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7ba.bin
7df2207d2d7653d42a3bb68b7429d11f8f5437f9805b59243ae9e7395f565453		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7BA 5452 bytes

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