Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94daf1e911a0a1a…

MALICIOUS

PDF

76.1 KB Created: 2021-03-08 13:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 175c0eff1ab3aec6318fc6b514407f0f SHA-1: a1a5bbe913bf2ee63b9f23351dabbf7fbb49107e SHA-256: b94daf1e911a0a1a2a848fad3d2e4aa5da058219a30afa09caac4067a1cc1565
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs within the PDF structure implies an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jacksth.ru/strik?utm_term=movie+review+template+pdf PDF link annotation
    • http://vuzuwul.getenjoyment.net/harley_davidson_service_cost_in_kerala.pdfIn PDF document text
    • http://wepisoja.mypressonline.com/remington_700_sps_308_barrel_length.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c6a7b72-5c97-4db8-849c-38b30da5120b/64237963417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8336af7a-c30b-430c-a768-5257264c06f5/xukitogoku.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/programming_abstractions_in_c_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/sonesusuguxola.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/67297627560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e01165-0cd7-46c7-b724-55493d419c26/georgia_drivers_license_manual_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/bulave_tujhe_yaar_instrumental_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/21999812334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/024a966c-b04c-4e8c-9a27-0cc82641aa83/vimixopatepige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9fc70bb-bf7d-4f1c-9359-be8c76e78c30/fifty_shades_of_grey_theme_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/wood_burning_using_microwave_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/credit_protection_questions_and_answers_dreamweaver.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/xixonamepufudigujiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45614aff-e684-4613-aff1-8926999bc1b4/how_to_pair_directv_remote_rc66rx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8a409cf-0588-4ca0-9141-4531bcfdd27e/69253302068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/743b7c6e-86e3-4bcd-86d8-f9b93b8ec03d/fapumatedupaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a36aafc-963c-4361-b09b-d35f77bb2435/liwakagagisanoserasavijes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc5ec64-ca71-4dc7-a58f-f5a34a6b786e/pronoms_relatifs_exercices_avec_correction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9fe6d74-1b43-4229-a9aa-ab7c52dfdf91/oxford_house_drug_testing_policy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c131291-f961-44ab-81de-06262efb129b/popenuwulepudijubawanij.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_off0000eee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE9 5164 bytes
SHA-256: 4f864d019cb97fc8ad60ee9212491ae577f45dd4b4d40cc61e27ad41f5d72a5b
font_01_sfnt_off00010088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10088 10168 bytes
SHA-256: 561b5b5333240882c97147a6481ada8cb6f5f11e9ab30bd3a3672a3d54d42291

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