Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d04f48157bdee6e…

MALICIOUS

PDF

67.0 KB Created: 2020-12-21 07:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d1ed1bc5a140e87fe74b785c566a222c SHA-1: d32cef3543a5e97e7959e95945fe2235243ac762 SHA-256: 2d04f48157bdee6e12fab16edd968ca495615c7a2dc699dfbf51090af0a2cbc6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The document body, though heavily obfuscated, appears to contain references to 'doodle dunk games' and authoring information, suggesting a lure document. No scripts were extracted, but the presence of a malicious URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://ggtraff.ru/strik?utm_term=doodle+dunk+games In PDF document text
    • https://gimitowogavu.weebly.com/uploads/1/3/4/7/134746983/mapusutobogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_5fa9bedc424f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464311/normal_5fbac0b0419bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387417/normal_5fcef7009e42d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kudowo/alec_soth_broken_manual_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1412bcd1e280355d6a3a9/t/5fc2f44864571256549dfc9d/1606612040810/dnd_3.5_cleric_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/28004148888.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/brand_style_guide_template_indesign.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcabe2a35cfe5f3c796ebc/t/5fdcc3508eacc47ac4abf18e/1608303441044/xinegesopevinoroniro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/446c93d3-d706-46d5-916a-67a0b4c7337c/ranezevoxirujodivug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2655aa3-f6da-4a97-82b0-215beb3e45a2/bukobur.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5A 5112 bytes
SHA-256: f4c11cf7eb25689014a80c33950a1457cd582164cd06956da9835d886f8d70fe
font_01_sfnt_off0000dcba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBA 10200 bytes
SHA-256: 9c86313898f1ecdc38b4b1995f61e23632359e292532add2d8ebf7844085f9ff

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