Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb566c6e98510cb7…

MALICIOUS

PDF

68.8 KB Created: 2020-11-24 18:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: eed684b73aff1217c0b74b5daa80503d SHA-1: bfcdb58bdac11b90a5163795ae620bb5886a5435 SHA-256: bb566c6e98510cb7b267c8b5eb6b9f8fb8c3332dd6bab7365e3d26f9fd790fe6
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffi.ru/123?utm_term=flash+game+websites+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5fa5e9fc611a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5f9eeab714501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_5f9a8040821c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5f94df8616934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402936/normal_5f9d8ff279baa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413110/normal_5f9ae7d700b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5f888a75efa8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425784/normal_5f9db8c8c2935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382972/normal_5f9d0840ae05e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413004/normal_5fa86b77c7f56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/177aba74-858c-4ac5-821c-18e89a29fc13/48228568785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07faec0d-859f-4190-882a-732484b0b75c/350_18_2_re.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3eb937e-0e8c-4e69-a922-fc6c524e461e/pufofon.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/95658403375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60c8f9a2-5a04-4008-95ad-0bfc330972c3/20337199947.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/16623514045.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_off0000d193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD193 5192 bytes
SHA-256: 8422bd578ba03d30a3102762d34c1f3883d6303280d2ad31abf6a7b31b1ba3cd
font_01_sfnt_off0000e32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32F 10296 bytes
SHA-256: e111ebd01bd60b8421048ba68153b867c8356a227981f33ad155324ab0691953