Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d9f27da584bab4…

MALICIOUS

PDF

81.9 KB Created: 2021-02-15 21:47:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6aecf3af3757f0bcfd4c600dfec9f728 SHA-1: c68e641c03d749795ed8c6bfe0d8b5b3d3c2b638 SHA-256: 09d9f27da584bab4c6bca407d555f760c0c613fea6f7292ff517dcf4c788fc14
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text related to the URI, suggesting a phishing lure.

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://seumenha.ru/strik?utm_term=the+story+of+orpheus+and+eurydice+pdf PDF link annotation
    • https://cdn.sqhk.co/zekafomaze/AK4jbW6/10_sticker_packs_for_warranty.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/he6Phab/suppository_laxatives_side_effects.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407304/normal_6006aa8915995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463262/normal_600a9577473b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405419/normal_601299bbc7b46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412164/normal_5ff02b2c4b3a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_6015163159a1c.pdfIn PDF document text
    • https://cdn.sqhk.co/dezosanag/PejrjaB/dusetinixutego.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/ja8wgj5/81546837318.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/UPXLgjF/28696112247.pdfIn PDF document text
    • http://norukirabo.iblogger.org/50937052230.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/benubapopikaj/mcdougal_littell_geometry_resource_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/bididazinipasivojag.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/50167335423.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF042 5144 bytes
SHA-256: ec43ca33ac1d5edc276c75c683c9f6cf48fa54fd12f120d3db7571dfcf8f33a6
font_01_sfnt_off000101bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BD 14028 bytes
SHA-256: 27701592df1c3a45a0c8888669e7620a167d3588c2df05d0cc09012baeb8f0d5
font_02_sfnt_off00012cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f