Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f7ac7e34a64ed62…

MALICIOUS

PDF

70.5 KB Created: 2020-12-31 20:02:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2d6e1f322457f6a0de12a517d393f788 SHA-1: b5a8fdd59e6f29a0f837a92def923ddf13cba527 SHA-256: 6f7ac7e34a64ed62c3acb909e7eb4e6ce657cb72223b7e4fa6967150bd6256d6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit vulnerabilities or redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=great+gatsby+chapter+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372358/normal_5f89152737390.pdfIn PDF document text
    • https://cdn.sqhk.co/mibajufaneja/ji2ggjf/49165440874.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/lomogas/fovamenifed.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/tasuwijazagejewelefamore.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/postnuptial_agreement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c847d61-a4b2-44c1-ae6b-cf497288f414/cuales_son_las_silabas_abiertas_y_cerradas.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/security_systems_company_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/ropovudadumodokemukiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bd2ab61-4c80-4ce4-8b80-3051af6b2c1c/venomous_vs_non_venomous_snake_skin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adf5edff-020e-44d4-a14e-c5afb8dbba63/kipolupazimeledufi.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/amazon_appstore_for_android_4._0.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/thin_sheets_of_wood_veneer.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/82787839057.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/napolidemorebaxagukufiz.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_off0000d529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD529 5600 bytes
SHA-256: 890d9731f3ff4800582dd5bdf3abd66a36bee3f2b18bbe00e54cdb6fc8b48e6b
font_01_sfnt_off0000e839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE839 11056 bytes
SHA-256: 5c3a55f14f5787d649a4722e1c15011423c194618f87657dd472e13099eceb83

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