Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae75c69a71a79b27…

MALICIOUS

PDF

72.8 KB Created: 2020-11-24 21:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1eded05017ba07566571293f4732ac2e SHA-1: bc767b8acf61617a8e88b5521999e796d8b58ed3 SHA-256: ae75c69a71a79b27aadd0f5db18a5eba8135a52edae70ae2af5ff51020223d09
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely a phishing site. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to this external resource.

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://traffine.ru/strik?utm_term=florida+auditor+general+compliance+supplement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391649/normal_5fba88989eef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f97371914e71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f89fdc4be026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_5fb960a7e336f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_5f97e23441cc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fa05f4f13dda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_5fa5f14160dac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469863/normal_5faf035849c87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420767/normal_5faa14b003bdc.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/fodose/australian_immigration_form_47a.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/41941127307.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/maytag_quiet_series_300_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/combine_worksheets_in_excel.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_off0000e1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 5348 bytes
SHA-256: 5cb7dc66dca17bd4ffbfe48e9e8a591ab46f6b24ce32eb74313af9a2d5a12d32
font_01_sfnt_off0000f3dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DC 10112 bytes
SHA-256: 84790d0a5fba1b99af65cb810aea2d96e5a9b686ab8bd65a8e02992341f9c71e