Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08cf326f541cede…

MALICIOUS

PDF

70.6 KB Created: 2020-11-14 02:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3171e75497dd1b4393b0dcd863d69f45 SHA-1: 6d08f63e500f17c5cd4b8f48fe41645be7aafc1e SHA-256: e08cf326f541cede3805ae1107c3ee07d4c693d86bcb8b52b8ee58febb50e30c
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded URL pointing to 'trafficel.ru', which is likely used to host a malicious payload or phishing content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=brazil+food+guidelines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f92c594cf0be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5faead5020205.pdfIn PDF document text
    • https://nuzaguwimera.weebly.com/uploads/1/3/4/4/134492670/kisuseju_pezepod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421960/normal_5f99b5dec0fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_5f91c59f8eede.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/1cb30897-7b7d-433d-a32f-97903fa86c0b/highmark_health_options_formulary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69b5a83d-fd0f-4044-8e9f-cd5951f1605b/fewulesaboral.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b13506-4ab9-4b9c-8de8-200eb80148c1/34536704411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e1ae37-d10d-40a3-b45e-03fdc1e3a3e6/67625749865.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78b8b19-d165-43c8-b425-9407b1f4a221/xixekogokokasologawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2716b442-4930-4112-ac60-5133d8fb0b4f/kixivawo.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_off0000d882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD882 5176 bytes
SHA-256: c10e242da2cdf45322e71a0e1e0be40e741736aa9cae8c24462018ce84ee01ad
font_01_sfnt_off0000ea37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA37 10528 bytes
SHA-256: acb4d78f9049b62aa33541cb51311e342a601661d6aee6c3ecaa7c7f223d9e22