Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d114aee25d3801…

MALICIOUS

PDF

90.3 KB Created: 2020-11-23 17:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b25bff99732dc650695ec9ae6e819b08 SHA-1: ea06e7080c31aa653ca1367e41e3a8e8cf56fe27 SHA-256: 76d114aee25d38011649bd09306f6e12c51bdac6ad3986a60f4e918174750ff6
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://cctraff.ru/123?utm_term=financial+institutions+instruments+and+markets+8th+edition+pdf+free In PDF document text
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/6322435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407069/normal_5f991e79ae511.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/2a4b1e53520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f8b7956db1a9.pdfIn PDF document text
    • https://kelawuduj.weebly.com/uploads/1/3/4/3/134330896/lutudi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_5fb27d0ea2165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f96746dd690d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_5f9d47bc76b07.pdfIn PDF document text
    • https://lexebemo.weebly.com/uploads/1/3/4/3/134315688/xabijerofexe.pdfIn PDF document text
    • https://gefelamanak.weebly.com/uploads/1/3/4/3/134353999/24523a9dfa383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5faa053b9017d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001237d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237D 5608 bytes
SHA-256: dab8194ae8505beccc7b243075d2f9e67c9301569dcfb7b916f177d8853d62fd
font_01_sfnt_off00013665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13665 11084 bytes
SHA-256: 6b43dedd7a4826c13049ba3380e6f52ec4f31fa616961331d9b4a59c00791194