Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a61011e92329ae…

MALICIOUS

PDF

79.5 KB Created: 2021-05-08 01:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 652390e2d779a67c5626ac21f973efec SHA-1: c64263c077b929a8c3f9dafb28b72149f662f3a0 SHA-256: 00a61011e92329ae8d677491d0c041f49f7e5aae3612cda7d100679aed84751c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('soxebez.ru') disguised as an 'audacity tutorial voice editing' resource. The high ML score and ClamAV detection indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=audacity+tutorial+voice+editing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403282/normal_606439b21c469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_6042e9c0b0aa4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5ffe4e60e63e2.pdfIn PDF document text
    • http://copyrightsupport-ig.com/binomial_theorem_worksheet_answer_keycoh64.pdfIn PDF document text
    • http://clipshd.design/basketball_plays_against_1-2-2_zone_defensearepr.pdfIn PDF document text
    • http://tajumizigareni.iblogger.org/das_boot_lothar_gnther_buchheim.pdfIn PDF document text
    • http://megahit.space/super_n64_emulator_for_androidqj7wp.pdfIn PDF document text
    • http://my-favshope.online/hamilton_beach_flexbrew_error_code_needlezinh8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503279/normal_600330b7f0e6e.pdfIn PDF document text
    • http://goodsfor.life/que_responder_a_una_propuesta_indecenteneyd2.pdfIn PDF document text
    • http://ig-support-service.com/kotimosazabapenisifixone13hwe.pdfIn PDF document text
    • http://pay-order.info/sat_score_range_2014ecabk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413458/normal_5fc696b35db46.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_9c5223804d6e4322a76197c862d3cd6e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a2f4a7-ae45-4f35-8de1-dab15ed4451b/how_to_thread_se600.pdfIn PDF document text
    • http://xalesikejuxo.epizy.com/xiriwikezogibilaletuni.pdfIn PDF document text
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_9fcf6b2e332f41f98a9f63f4ecd60ef6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7048d1bd-6468-45b4-b970-24c9e797e4b2/barcelona_pavilion_plan_cad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bd83d6-89ab-4ee8-9a1b-36c14a067aa1/vizukedubavaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f7cc806-d59f-40bf-9d6e-24fd75c7709a/tecnicas_de_redaccion_coherencia_y_concordancia.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_off0000f72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72F 5080 bytes
SHA-256: 342afe498b8314681e61de1b84a2c866ceb31ef91fff3629a2fc2c66f3a43b3a
font_01_sfnt_off00010898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10898 11928 bytes
SHA-256: c34b2eca924f7ddb3b2caad6bd5164bca11e26fc711c6a42eb40fe7143746488

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