Malicious PDF — malware analysis report

Static analysis result for SHA-256 007618bbb10f8be9…

MALICIOUS

PDF

68.0 KB Created: 2020-12-15 20:39:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 24a0bff61c69eaec7b5f8ec6bc2c6764 SHA-1: 96df81142281d8d68121b7b99be194389d96bc59 SHA-256: 007618bbb10f8be933a613d66b4a37e3348d5898bf52319102a86a112884bb85
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'traffnew.ru', which is likely used to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

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://traffnew.ru/123?utm_term=the+explosive+child+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414173/normal_5fa4c82965015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470019/normal_5fd8546724a97.pdfIn PDF document text
    • https://fofirajajamide.weebly.com/uploads/1/3/4/6/134643930/6226511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f9bd48423b88.pdfIn PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/nazafevetip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390350/normal_5fc20e2cc6ff5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_5f96cfef87f9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_5fd7971966bbd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/32620214336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39ef47e-dfcd-4b7b-a757-4da4da8641f2/bedamin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10dd611f6a419848684c6/t/5fc15f9e1972c46e3cd23c36/1606508446566/sun_rock_retreat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17635625-a23c-436e-8e82-942f4a681219/transient_equilibrium_ratio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23a16ef0-4fa7-48f1-9f3e-830b446e3f1d/viet_cong_soldier_executed.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_off0000ce82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE82 5120 bytes
SHA-256: 25e8c10944db548b482c9f315a8384cd53b6a9ac6b987403ada45af3960af2b9
font_01_sfnt_off0000e000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE000 10420 bytes
SHA-256: 2c873c893ee87a41d1e3a1af59c0450d2647836d7c5e44780153468874d0cec7