Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4666e246d82d1f2…

MALICIOUS

PDF

76.3 KB Created: 2021-04-02 15:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 820014070f2b7d6b55634751ef5adade SHA-1: 9c4a9260460920833b46715cc52779a89a76f938 SHA-256: c4666e246d82d1f2e9f22338ada9afcfaceca5fd979757f3b33899b4849de917
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=adrenal+medulla+hormones+pdf PDF link annotation
    • http://sitebomobegux.sportsontheweb.net/22180228820.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490140/normal_5febb2201b6cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379230/normal_5fe234ba97e57.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/tjhJhiS/68030727238.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465704/normal_60049eda75d2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417319/normal_60099c3966399.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/jeggW5b/international_superstar_soccer_3.pdfIn PDF document text
    • http://mopowataxix.medianewsonline.com/download_small_pro_gratis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_5fd234afdabd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486367/normal_6047d5aceb67e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_604ae93b7c143.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/7heifTN/posotozuloseduvokajeniti.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/fedojigudaj/93714733869.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/taurus_g2c_extended_magazine_clear.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/pegakepipipodewajudi.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/error_on_my_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/the_complete_calvin_and_hobbes_hardcover_vs_paperback.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/napan.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/19586425684.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/kadade.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/kms_activator_office_2013_windows_8.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_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 5268 bytes
SHA-256: 009173008e045faf64cd5fdb76d346db1ff3533121b3eb9677eb950e7a5f663a
font_01_sfnt_off0000fe30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE30 11076 bytes
SHA-256: 69ddabe162be234ce45d9b626229ed249322e2924cc0726aff8654124e0b0836

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