Malicious PDF — malware analysis report

Static analysis result for SHA-256 418dcea6bb908fa3…

MALICIOUS

PDF

63.9 KB Created: 2021-01-02 23:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37f922a6274d107d90fbeb989bfa2b94 SHA-1: cb2cc4dad09842f7c3c34a7064c0b2b2acd058cd SHA-256: 418dcea6bb908fa31c2fd478e9f52d7c6af9539186595da8797eaabb89f5a61f
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://traffnew.ru/wb?keyword=stone%20age%20boy%20book%20free%20download` suggests a phishing or malware distribution lure, likely related to a fake book download. No scripts were extracted, but the PDF structure itself contains malicious indicators.

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://traffnew.ru/wb?keyword=stone%20age%20boy%20book%20free%20download
    • https://cdn.sqhk.co/jegisizozul/ibjePia/fantasy_flight_star_wars_board_game.pdf
    • https://cdn.sqhk.co/juzogimuju/jexhdgj/neighborhood_watch_website.pdf
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5fbfcc5e9f3d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f3e6cc3a-6f57-4170-b7c9-ef14d45db48e/berserk_official_guidebook.pdf
    • https://s3.amazonaws.com/jopomodilamego/10477783101.pdf
    • https://s3.amazonaws.com/dovulavavo/firurum.pdf
    • https://uploads.strikinglycdn.com/files/820ecf65-3c35-4361-b0ab-caa956a17b9e/68581624889.pdf
    • https://uploads.strikinglycdn.com/files/ef4efb73-32f5-40f8-8d90-f29d6cf51a6c/disney_world_apps_download_free.pdf
    • https://s3.amazonaws.com/setigafat/8213842767.pdf
    • https://s3.amazonaws.com/zategafozasiru/ideal_gas_law_practice_worksheet_with_answers.pdf
    • https://s3.amazonaws.com/pululusodogi/chrysler_voyager_2001_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc0f.bin
0dbb311f58bda84ec21c8c457df546e33dcf2a2a7010986379cacad813277df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0F 5400 bytes
font_01_sfnt_off0000ce9a.bin
ec6d7a79c61026ea5518a12acd916325a39c9c9e81b061154a74e1cfb98c4a70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9A 10192 bytes

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