Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfee5a9b95fc04d8…

MALICIOUS

PDF

62.0 KB Created: 2020-12-15 08:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: bbf88a5e705d211ee12fdfdc91f0381f SHA-1: bae2bacb86e4c35bfb45ad3c5058b81ce9857e25 SHA-256: dfee5a9b95fc04d8e20b690bc76a2f208aa50f2e19ebeb93f0858550e3e72357
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely part of a phishing or credential harvesting scheme. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=fl+shots+login PDF link annotation
    • https://nubitewubol.weebly.com/uploads/1/3/4/3/134385952/mopazirezuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408711/normal_5fc3de7d7955b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5fd2ea5827e93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f9fc3b88d637.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/ba74f784-c478-4b0e-82e8-3709a147aeb9/8049789479.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf96af81c9a2a0c680927/1606285675475/modern_combat_5_apk_download_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/bufoxeruvabajume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484929f5-ef15-4983-9014-ef9da8b2cfaf/rijeribamosiwifafuzifab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8deca34f-afef-4a10-a276-bf1a4276e673/dakufakijogawu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e144ab79f442f2430649/t/5fc6e4f01d689b68bf8bd0db/1606870258268/mimisukazebili.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/appendix_1_form_agriculture.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_off0000ba5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA5D 4596 bytes
SHA-256: cdf8f32f13f1664dc610d9cea7d39194dba70f206797333708640036fe360a83
font_01_sfnt_off0000ca06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA06 9980 bytes
SHA-256: ed3969764e2fe9fe2a3f79b961a1777251f7b868ec31e94858aa5bf999d1e711