Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae01849b0222a73e…

MALICIOUS

PDF

69.2 KB Created: 2021-01-06 03:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bda26fc5b90f429b79fe1090b47acc7 SHA-1: b39c4b1b0cfed629be40de46957511ac471ba15f SHA-256: ae01849b0222a73eaafe4bf1573f23c2dbfb8fb2d7ae62858d5327f3fb24e45f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=speed+needed+for+streaming+tv'. This indicates the document's primary purpose is to direct users to potentially harmful websites. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/aws?utm_term=speed+needed+for+streaming+tv
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/8d88b32.pdf
    • https://bivamotitujodo.weebly.com/uploads/1/3/4/7/134712473/zajuw-mofidixodomoxe-memaj.pdf
    • https://cdn.sqhk.co/lanasido/4oxfoia/car_simulator_games_for_pc.pdf
    • https://cdn.sqhk.co/semejegofip/ifib2UC/fawerajin.pdf
    • https://cdn.sqhk.co/dekaroku/32PCejh/carrom_board_powder_walmart.pdf
    • https://cdn.sqhk.co/modajili/EVjgTR7/vekuxanigipuwupav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/loneminovu/alfred_wegener_theory_of_continental_drift.pdf
    • https://uploads.strikinglycdn.com/files/e67cb952-a117-4e3d-8595-c4e490a639a0/94904898128.pdf
    • https://s3.amazonaws.com/zukogi/atresia_de_vias_biliares_neonatal.pdf
    • https://s3.amazonaws.com/vutame/43862515507.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_off0000d169.bin
ed446b25bb2c727606ffc36fba101ef952771d3d4b5c6bc1046d168585e11868		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 5492 bytes
font_01_sfnt_off0000e40c.bin
968df834c2b38b172e6d5a9473c5c8c48c1a256fb1e152736814ec1fa2a13ea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 10748 bytes

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