Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc8ebc6fc97e068…

MALICIOUS

PDF

36.2 KB Created: 2020-09-16 14:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01c51389e4867ceaf157de3210f56b78 SHA-1: 6dd79a594516cbac20ab7d76d169f1ec7bd9dcaf SHA-256: dfc8ebc6fc97e068656a2f4a2e5dcedf97bebe611ef7854ee88ac8fa72a5c967
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this file as malicious. The embedded URL, https://ttraff.club/wix?keyword=beauty+of+the+burst+pdf, is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 2

  • 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://ttraff.club/wix?keyword=beauty+of+the+burst+pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/zafujegalurobaru.pdf
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/acinetobacter_junii.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/98556536902.pdf
    • https://fce5797e-ca83-44bf-99f0-9bd10e3f48ba.filesusr.com/ugd/b7306e_077f2996fddc4ae4b158a80f0f9e37a7.pdf?index=true
    • https://bd8f604f-e8c5-40c1-8cb6-68d82f38de94.filesusr.com/ugd/50988c_7c23ff4ee3174bb4b3a6ab49d143fbb9.pdf?index=true
    • https://636b8d01-6109-4ecf-bda6-33cd03fa3f79.filesusr.com/ugd/2994dd_d9ebf3b60705449a858aeaa0a2d43157.pdf?index=true
    • https://1cad22bb-f436-4d00-9745-f22079919e97.filesusr.com/ugd/565485_cf52861f3cc04bb69e1e9317991e4f51.pdf?index=true
    • https://cf22f4f4-0b20-44f1-80f7-20d8885a34b8.filesusr.com/ugd/3f80ec_d4dc942ed53c4463bd15b069d3c6ca3d.pdf?index=true
    • https://2101ea13-1577-458d-9fee-d1ac18e9ae09.filesusr.com/ugd/4b874d_68a734e52ef845eca31c583f995601db.pdf?index=true
    • 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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042f1.bin
1153ca41e578868830d3680935119a0a7c5011931ea10e78bbc0b062c290b57e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42F1 5116 bytes
font_01_sfnt_off0000546b.bin
0da8c2dd36c35dc84a46f7a4df3dcf23f0ceb58a266944082e078fe23dcd39b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546B 9948 bytes
font_02_sfnt_off0000767a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767A 4324 bytes

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