Malicious PDF — malware analysis report

Static analysis result for SHA-256 3594a30efd36ca52…

MALICIOUS

PDF

66.7 KB Created: 2020-11-18 23:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a6d45b034d363859f21c5ac83e1e92d7 SHA-1: 98ccee213eb24247e3bcb734979ca3dc45e80a4d SHA-256: 3594a30efd36ca52acaa9a296b6ab28ffd874b4d599285997d680815b480ec01
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, and contains an embedded URL pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to a 'feasibility report'. The presence of PDF-specific heuristics and the overall detection pattern indicate a phishing attempt delivered as a document attachment.

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://traffking.ru/123?utm_term=feasibility+report+sample+for+small+business+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404512/normal_5f9eb9e5ec024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f942bc410f75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8d1982320eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fa9b6511eab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f8efafc15eed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5fa4a4c90d41d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_5f965943c80a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_5f9f8c4042a6c.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/4be3055e-aeb0-40b5-acec-7adbee8460d3/kemababizegovasunasuxur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09ff1c0a-d8b1-482f-b662-ec73b654e428/fetuvewasufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a653160-40e5-4186-b9bd-50af207f3e33/coolidge_high_school_teachers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/474d665e-0803-414b-ab4e-57570052a816/47258308435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0902481c-bb27-4071-98eb-f7a52641722b/cocalico_football_team.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_off0000c99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99E 5384 bytes
SHA-256: d215f768cf28deffb9d94d336839bcf89e74dc6db1a315d5633081adfbe25e64
font_01_sfnt_off0000dbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD9 9992 bytes
SHA-256: 03262b204a65691ce0626c5c982b8b6afa3b98899d2ebb11315b175d87ea8cb8