Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05f19eb2bc2dd07…

MALICIOUS

PDF

75.0 KB Created: 2021-02-28 14:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 49577de1206e99bca4e2c6e6092d519b SHA-1: af3db5ad71a7874967729ca3a666f4e57e9349d6 SHA-256: f05f19eb2bc2dd0712ac2c527680048fe056977a07a8d69eb0960797938f1d80
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are hosted on link farm domains, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0' strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Atlanta arrest records free', likely a lure to entice clicks on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=atlanta+arrest+records+free PDF link annotation
    • https://cdn.sqhk.co/wejawujagi/C0ghMkg/to_do_list_ms_access_template.pdfIn PDF document text
    • https://sevafigetof.weebly.com/uploads/1/3/4/9/134902911/peponejotulo_jifezuxugasodud_fabalo_mifum.pdfIn PDF document text
    • https://xolivura.weebly.com/uploads/1/3/5/9/135958321/9228849.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/pikilasavo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464055/normal_5fce8c1030ea2.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/5BeicNN/fastest_way_to_max_out_shooting_badges_2k20.pdfIn PDF document text
    • https://cdn.sqhk.co/sebuwemid/idibgcT/runtime_lion_king.pdfIn PDF document text
    • https://vedatirujoxe.weebly.com/uploads/1/3/1/6/131606280/giselegarabew_veronof_veponixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419002/normal_601fd7bf49e51.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/what_is_the_electron_pair_geometry_of_so3.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/sukobogixe/josafomurakew.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/6720806093.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/sopibol.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/baileigh_press_brake_manual.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_off0000ebf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF2 5004 bytes
SHA-256: 95fb96f7395244f3ca6063c3b9c5f3d202f29258b26726a8e514303c540d6c09
font_01_sfnt_off0000fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD04 9924 bytes
SHA-256: 6dc009bb9f1eab9711aa72eba7d917fbf53c6bc3e6096d4b9cb18da6ef6c919d

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