Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0001ee47d073332…

MALICIOUS

PDF

72.3 KB Created: 2021-02-15 11:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 23be8a71df58109c0743a979d0f79c48 SHA-1: 4a460b24dd38f73594b56e75e32648647ca68b6c SHA-256: b0001ee47d0733320196a81a26b5a841a26e9b55da165475d01c99229e33f2a2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://seumenha.ru/wb?keyword=percy%20jackson%20memes', which is likely a phishing lure or a distribution point for further malicious content. The document body, though heavily obfuscated, contains text related to 'Percy Jackson memes' and the wkhtmltopdf application, suggesting a deceptive pretext for the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wb?keyword=percy%20jackson%20memes PDF link annotation
    • https://cdn.sqhk.co/bowawugafux/egehhjg/sniper_elite_nazi_zombie_army_trilogy_system_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/jagojixego/ggcijhe/fenobejexotujekugize.pdfIn PDF document text
    • https://cdn.sqhk.co/wokiwife/iIvLjaw/41975951323.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365613/normal_5fc5bffcc5caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481820/normal_60251be23db96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408352/normal_5ff1ae5497365.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/jifjhOm/flying_rabbit_adventures.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421960/normal_5fe2dadf5ae84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5fe3e78d87e55.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/rghhdha/xilugoxexakepadutezip.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/ajeySki/cars_jigsaw_free_classic_puzzle_games.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/pilazi/calligraphy_practice_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/11672606160.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/google_sheets_for_bills.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_off0000df05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF05 5156 bytes
SHA-256: 2aa22267fdee54af35ddd0ac1ded11cc97b6de5c7f726f2404b5925ecca8cd26
font_01_sfnt_off0000f08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08E 10576 bytes
SHA-256: 356ed2c87d46f72e2df802e6c80bfc3dfb7cf4bd8c3cd100ceb264bbb3a2b769