Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b03a7239cf71be…

MALICIOUS

PDF

80.3 KB Created: 2020-11-17 15:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5108b00197a18dd5d3bf7abefd5bea41 SHA-1: 5b3159a4cfc64ff72b923e65f87f1b81681df3b3 SHA-256: d4b03a7239cf71bedab9ff5921235330b4e59b0d47a71367bf2aeeabad39f518
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Project diva f 2nd song list' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=project+diva+f+2nd+song+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fb3c743142c7.pdfIn PDF document text
    • https://kofukupapakube.weebly.com/uploads/1/3/4/5/134586312/nopupodusaxatil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463560/normal_5fa918af766f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472776/normal_5fa63d87e402b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_5fada59f65614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_5f9fc1665e5f3.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/vogubivajavofu/25680897382.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/guzanepesagimusuwoxijeja.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/widal_test_result_interpretation.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/how_to_linearize_data_in_physics.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/bowflex_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1463ec4-4a18-42ee-8361-6f88cf772279/bank_robber_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/tujomonidaxoje.pdfIn PDF document text
    • https://s3.amazonaws.com/movodanex/very_garden_furniture_sets.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d16a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16A 4468 bytes
SHA-256: 6f8890184bc9b8fccc696b966adc255c29e6fd48dda34b1fecbe65b9eaff9581
font_01_sfnt_off0000e11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11B 5456 bytes
SHA-256: 57926fc2af855db21fe462d44e63e71b2cf714d3b66a57cbe2705800e0e34dc3
font_02_sfnt_off0000f3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CD 12004 bytes
SHA-256: 7055c74098990f39a46929a9e82afd409872bc20d5625c948fbca544f3f05fb7
font_03_sfnt_off00011ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE0 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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