Malicious PDF — malware analysis report

Static analysis result for SHA-256 406a9b0da076c916…

MALICIOUS

PDF

73.4 KB Created: 2021-01-24 14:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 655103b9c94e958777fbbf8a4034a47a SHA-1: 0069876edfd9268bfae42cc2916cd5a6cdef873a SHA-256: 406a9b0da076c916d60669396a945e311734fbe913fc6ae2d3ae4a985cf2f5e4
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 part of a phishing or malware distribution scheme. The document body, though partially corrupted, suggests a lure related to 'Olympic game 1983 download', aiming to trick users into clicking the malicious link.

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://trafftec.ru/wb?keyword=olympic%20game%201983%20download PDF link annotation
    • http://reduslimitalia-ufficiale.site/69375515104al30d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fff7478c0614.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448115/normal_5fe0ec291365a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420764/normal_5fe38c751cf29.pdfIn PDF document text
    • http://ilmahli.com/585888515674w444.pdfIn PDF document text
    • http://siondez.ru/fuwakifinozemafadevejlqabg.pdfIn PDF document text
    • http://bubble1.space/download_wallpaper_images_for_whatsapp_dp0sr6s.pdfIn PDF document text
    • http://vipmanmarket.space/witcher_3_ps4_crafting_guideblnjc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453335/normal_5fec132250a6c.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/fatisake/bringing_them_home_report_1997_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/degobetebekekapena.pdfIn PDF document text
    • http://mexowotevofo.rf.gd/bubba_blue_small_world_cot_fitted_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/99043926324.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/kindergarten_learning_time_worksheets.pdfIn PDF document text
    • http://junedujivoxoz.epizy.com/drag_and_drop_website_builder_software.pdfIn PDF document text
    • http://nirozat.rf.gd/kidalozexigokagibew.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_off0000e184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE184 5904 bytes
SHA-256: e1e6962fb0970faaed4fd1557a28407266c1437ff4ff69faad8c3f6079e8a870
font_01_sfnt_off0000f5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A7 10184 bytes
SHA-256: caf16e9e0885e5af3c0f88b389a46cc12a1b63256f843e36ba24e74b43cc5ae6

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