Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f45eb4d6dde0184…

MALICIOUS

PDF

67.6 KB Created: 2020-11-21 11:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2fa3b907305991feed7c27d14e5aa7d5 SHA-1: 03562408b23f81c67ae481d72f66a695a968374d SHA-256: 0f45eb4d6dde0184f446fabb7ad968e3bc01ab78098971ea469ef377e2d6b587
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'traffnew.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://traffnew.ru/123?utm_term=st+john%2527s+baseball+roster PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fad8f62e84ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_5f94c0026f153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f8ba650eb072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416321/normal_5fa14565109da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5fa4c47e4e6c8.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/c2f4b70f-0802-48f5-9186-833b59e6a310/la_casa_del_futbol_horarios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b028e997-d57e-420b-a675-b277b28fabc3/lasermax_guide_rod_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/647b7cb5-8d73-431a-bdb0-dc7ebb3b9fc1/sap_contracts_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a428154-0bb6-4410-9885-306d6b840bc4/40401421625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22461dac-7cda-41fa-b4b6-582fc99d9401/84065219603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93509b72-d4a4-463d-88ed-8e1d60420224/88074822262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9d8bd1-de44-4844-b2eb-236099dd5d3c/14050865249.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_off0000ca6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6A 5128 bytes
SHA-256: 02ac0fdea162008172395d44fa9dfab95a739ce33eb862d29e977cad8698ca5e
font_01_sfnt_off0000dbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDA 11348 bytes
SHA-256: 0851aedb5ed05b8eb47bb68ecc2788bfbbc5903405083c38763481e48a62bd07