Malicious PDF — malware analysis report

Static analysis result for SHA-256 8119af237cdfee1e…

MALICIOUS

PDF

173.7 KB Created: 2021-03-17 10:45:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 373db714cfed818a721b4578fc28e873 SHA-1: a198bd5ba2efa155d64f155a3599cfb351957710 SHA-256: 8119af237cdfee1e6d64f44260e9628795dbb8d063591540ad59f1ef402859e2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that mimics a search result for a free Bible study PDF, likely as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lure suggest the document is designed to lead the user to a malicious download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/award?keyword=nkjv+cultural+backgrounds+study+bible+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/rawejefipemi/gcAWHE8/classic_wow_rogue_guide_pve.pdfIn PDF document text
    • https://zojovotonoturur.weebly.com/uploads/1/3/5/3/135348007/01aba.pdfIn PDF document text
    • https://cdn.sqhk.co/duwewofowus/dhevgde/friend_finder_networks_data_breach.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414167/normal_600320507ea6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474978/normal_5fdf4a673a464.pdfIn PDF document text
    • http://wegolurubakisud.22web.org/piano_sheet_music_chopin_funeral_march.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/notability_annotation_ipad_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/mezewimaxus/ygZhgjg/top_up_dm_ff_di_dunia_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452372/normal_5ffab4e2c5280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403266/normal_5fe63765bdf3c.pdfIn PDF document text
    • https://sutulozutujak.weebly.com/uploads/1/3/4/8/134884412/1410567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458852/normal_5ffa6b7e448ae.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/airport_vocabulary_exercise.pdfIn PDF document text
    • http://zunololanuxigu.sportsontheweb.net/18827201275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://puwufuwe.rf.gd/pajafinosiwumul.pdfIn PDF document text
    • http://jokipuzovorije.epizy.com/62360436181.pdfIn PDF document text
    • http://gedobesixo.epizy.com/whirlpool_quiet_partner_iv_dimensions.pdfIn PDF document text
    • http://durozebexonadop.rf.gd/allianz_sigorta_hasar_ihbar_formu.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_off000254a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x254A5 5824 bytes
SHA-256: 4f27ef011cccde07d381c63e7e97f3d8d68917f9e1fbd68cc670f7e792b6a842
font_01_sfnt_off000268a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x268A6 16052 bytes
SHA-256: 25b0249edb83b276b72782a2cf2f4f5b836bfebdbaab5ee7e16875f7501a5610
font_02_sfnt_off000298e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x298E2 4132 bytes
SHA-256: b38be9d91b32d48221eefd5339c03ba3cd3d327061b962d843f507cb79e5c5f8

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