Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd381fcf48ed97d…

MALICIOUS

PDF

72.3 KB Created: 2021-04-13 19:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1a676d2ec532c4b22372d1420a988390 SHA-1: 2fff2f802aa5827f9c73a782fff295a037727774 SHA-256: 0fd381fcf48ed97d533d946f33afc5d8ab11db32d420c70097f5f58716800478
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 embedded URLs pointing to suspicious domains, suggesting a phishing or malware distribution attempt. The PDF structure and embedded content indicate it's designed to trick users into visiting these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=our+troth+pdf PDF link annotation
    • http://sivolejujivozul.scienceontheweb.net/61196000431.pdfIn PDF document text
    • http://spindlndou.space/damijhsba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418391/normal_6036f3179fe34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392453/normal_6016ac92a0435.pdfIn PDF document text
    • http://natbeach.space/macu_auto_loan_promo_codepajbh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427514/normal_6000c930994cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446158/normal_6030e8844eb5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479213/normal_6005f3d5b7240.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/technical_analysis_explained_fifth_edition.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/divikufifir/anandham_tamil_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/6.0_powerstroke_transmission_filter_upgrade.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/deadpool_1_rating_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/breville_microwave_bre799gmsse_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/axial_scx10_ii_deadbolt_upgrades.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/56802252219.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/tazipo.pdfIn PDF document text
    • http://xazopufegi.onlinewebshop.net/fufojozirupokarubi.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/detektiv_conan_filler_guide.pdfIn PDF document text
    • http://xovolefewawex.atwebpages.com/tifofudu.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/flowerhorn_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/39641446339.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/objetivo_de_la_auditoria_informatica_de_explotacion.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/the_apology_of_socrates.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_off0000dceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEB 4736 bytes
SHA-256: f15bea244bd43a472ed79818026a58e911c3cffef0710eb227d9a4e4d4639a4c
font_01_sfnt_off0000ed03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED03 11792 bytes
SHA-256: 2e15a0c1e1666bb9ec20dad27fcb6fd352af2436aef1590dec98c156b1f17762

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