Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6e9e39349e66ce…

MALICIOUS

PDF

67.4 KB Created: 2020-11-29 08:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 16bbf3717d2a85729aa9ddd76d34b23e SHA-1: d1d45dd63a2097435ceaa5455506a3206f5e8b8b SHA-256: 2a6e9e39349e66ce6c37662992c5247276c6ddc66777908e55188dcebb20506f
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/strik?utm_term=movie+review+rubric+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388619/normal_5f9454de6ad04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408323/normal_5fb3c853b0af9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476595/normal_5fa63fe3a5b26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f8922de4d1fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454562/normal_5fc13ae8ec9be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444630/normal_5fa1ada226f39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_5fadd404580c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450354/normal_5fad9147a4122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455886/normal_5fb4e0923557a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483856/normal_5fbf4e94689e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5fc3008aa5cf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5f98c315e8143.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f8d50b1cc52e.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/1b888143-9e65-4424-93fc-26b4e9cda70b/98189493894.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_off0000cdfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFE 5028 bytes
SHA-256: 1e8134c4f1094296b1329439726cd16b376e1f88b8b4ebd824b278994c845e7e
font_01_sfnt_off0000df49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF49 9816 bytes
SHA-256: 60054761895d291adaf695a6b6a299d5a85b7a0aa0ea0c837d6843ae5d73b9fd