Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2405bf1f3d0b8a…

MALICIOUS

PDF

81.2 KB Created: 2021-02-20 20:40:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d5f12aae1ef6dafb90ecc7bcca01e149 SHA-1: d89958e6ded93514eff62ce1ded341a4b66d15fb SHA-256: 1d2405bf1f3d0b8abad0b557590112a997391a02d774267681240752a8dbb6fa
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to the identified malicious URL.

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://jottigo.ru/strik?utm_term=las+flores+del+mal+de+charles+baudelaire+mercadolibre PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386836/normal_5fc7e15ee4989.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_601297245316d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372982/normal_5fed3b9567930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457560/normal_6031499a6db44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446400/normal_600a6ba9e9818.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413362/normal_5fde81b5e63ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_601992c3d99d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421611/normal_5ffa456041f71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5ffffffda7039.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/voxipanovigepiv/79399506152.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/dotted_reporting_line_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/babam_bam_bam_lehri_song.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/aurora_teagarden_mysteries.pdfIn PDF document text
    • http://nekoraxevab.rf.gd/secured_by_design_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/solar_system_3d_model.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 5344 bytes
SHA-256: a8a4887df3b43df019e09455b9ffcbcc861db247ffd675165c6364e2258e5521
font_01_sfnt_off0000f1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A3 15580 bytes
SHA-256: 1d118ca08164637ea4b6abaa636f4b875a7f17b67e447f48d369b36738974ebd
font_02_sfnt_off00012089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12089 16104 bytes
SHA-256: 223e96291d2677202d9b1a8f031cb3a8d11ad23b70b868216b76b7153c327325

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