Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0dac3ab9584740…

MALICIOUS

PDF

74.8 KB Created: 2021-03-16 23:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52f68a946395d3e3d68491d71609d92b SHA-1: 7a8d8dc1b5a4da97296bd0361881411e6970c58f SHA-256: 8e0dac3ab9584740dd333d257bf5513204023976344243f595ac47dd91259cab
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to games, suggesting a lure. The presence of PDF-specific heuristics and embedded URLs indicates an attempt to exploit PDF vulnerabilities or trick users into visiting external sites.

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://leonvi.ru/wix?keyword=cool+math+games+map+snap+europe
    • https://cdn.sqhk.co/tiwefuxab/Zjhidjj/phoenix_suns_news_ig_model.pdf
    • https://cdn.sqhk.co/letaziseb/ghjcmgj/midumutim.pdf
    • http://sarupunojupud.sportsontheweb.net/79690666256.pdf
    • https://cdn.sqhk.co/kanojasav/j0Dibhi/9381715592.pdf
    • https://cdn.sqhk.co/mudonisogub/V2igeig/new_year_photo_editing_picsart_2020.pdf
    • https://cdn.sqhk.co/ruwonumatag/hhbcEsJ/define_hot_link_computer.pdf
    • https://cdn.sqhk.co/xuvisisitinu/7ib7ibH/degad.pdf
    • https://cdn.sqhk.co/wepunajexiju/jgjig8L/96951741856.pdf
    • https://cdn.sqhk.co/liripudeb/giicgcp/sojawarepofulebiwusis.pdf
    • http://vudifabofugejij.medianewsonline.com/91253598689.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f9de4b44-22c6-43d2-9686-b91b11374e8c/vetofomizefivafowupuki.pdf
    • https://uploads.strikinglycdn.com/files/26ef43f1-c784-45d9-892f-f0042afda6a8/gesorirotawitatemaxa.pdf
    • https://s3.amazonaws.com/jakujakula/descargar_age_of_war_2_hack_apk.pdf
    • https://s3.amazonaws.com/xebuvuwov/messias_maricoa_music.pdf
    • https://uploads.strikinglycdn.com/files/74a84869-c845-4b2c-9e64-56241e0634e9/excel_vba_macro_tutorial_for_beginners.pdf
    • https://s3.amazonaws.com/ravuxudibure/stanley_45_plane_cutters.pdf
    • https://uploads.strikinglycdn.com/files/5b2ab760-0079-40b0-b4bc-6e18672a4df4/d-link_dcs-930l_camera_setup_wizard.pdf
    • https://s3.amazonaws.com/bitajemisajoz/42619246447.pdf
    • https://s3.amazonaws.com/rogugagatuf/daselebafurojof.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_off0000e747.bin
160a90f5cc790aec9fc83cc57d59615893e9a2a7c52565e759198debc9b36ed7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE747 5136 bytes
font_01_sfnt_off0000f88c.bin
6f46cb9f44e2b0e1712d62aae5e8fc2927b4f8afa6018fc2142b1803af707d87
pdf-font-stream PDF embedded font (sfnt) at offset 0xF88C 11096 bytes