Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4cbee8f817df51…

MALICIOUS

PDF

72.2 KB Created: 2021-01-06 14:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c329d1a9f7ad30581e3d67c3d30848d1 SHA-1: 905127260c2d79b8ea6db73661da6ab43f241f2b SHA-256: 0f4cbee8f817df5128be6deb90f267ca997d048ab3125ce8eea2029c558afb8d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain metadata related to its creation, suggesting it was generated programmatically to serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/aws?utm_term=twin+bed+fitted+sheet+walmart PDF link annotation
    • https://dagolitufewanat.weebly.com/uploads/1/3/5/3/135345669/gupedajebafejejo.pdfIn PDF document text
    • https://dikivofugejal.weebly.com/uploads/1/3/1/4/131453076/vewideni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470703/normal_5ff5034bb86ea.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/007dab4a8ed4.pdfIn PDF document text
    • https://xidamosu.weebly.com/uploads/1/3/4/7/134707329/2399890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_5fb748cf8e403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412403/normal_5fadaaf198174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485589/normal_5fac3a9078790.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/3687e111-9cdb-432e-9292-d4220ada5824/pupepabikajidanegoroxip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19fc5a01-ae6b-46f7-8a35-2f0ec57f0ecc/80027422126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c114d82-4fc9-4a04-935d-ad657aba8de5/50483539889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec70cad0-72a3-4bcc-a931-978ef9a777b5/accurate_reloading_manual_download.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_off0000dcb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB1 5328 bytes
SHA-256: 0ac6a7389b523298ee65b9e6f8c7281aa537856041db8c9cd7ef944bb21373ce
font_01_sfnt_off0000eeb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB7 10988 bytes
SHA-256: f4f51ddd28435ef7c28006c8d3aea71e725b35edda6aa979debfdb74702f386f