Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b39b232edf3b229…

MALICIOUS

PDF

75.3 KB Created: 2021-01-13 10:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 780582f4173dfb4a8e0b567b815d73c3 SHA-1: ec1362dec979d6116f34e21b5d8f471bc1537289 SHA-256: 7b39b232edf3b229570d96d694b9ae7d8295463e8e750defebf29b5c1fbe9017
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=mallu+kambi+kathakal+umma PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451356/normal_5fca4ad5d0761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5f92745f8e49a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5fb6e0a7ba393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5feee875abeb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fb690de89d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393486/normal_5f9e1130df7f0.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/iegigjd/7584178658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5feee0d1d38b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_5faee1cfad5aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_5fa0a140cc381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412415/normal_5fb54bfd14f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420432/normal_5fe7bce2d5b71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5ff35f847dea6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496153/normal_5fb27f3ad86c2.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_off0000e769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE769 4860 bytes
SHA-256: 9ea95e1d36ed609fadf871d1ed5f01e01fb6adfc61a4f65ce776e54bcb5305c1
font_01_sfnt_off0000f7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D9 12988 bytes
SHA-256: 736f9e9bf030f363de3fd3624a39e428e893b46ce1be966186a02d668b42cefd