Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d86c1cea66aa2a6…

MALICIOUS

PDF

78.8 KB Created: 2021-03-17 16:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4439fe463ffe29610a04fd0ce7160f8a SHA-1: 7dfbe7b4d76ee704298563344f1079f522d29f50 SHA-256: 6d86c1cea66aa2a616ea2b018d032453b5ae4f6e5cba4ff1741edba4ed9f5764
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious URL, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=fight+club+2+book+pdf PDF link annotation
    • https://cdn.sqhk.co/nasanoroge/jigzihj/85155515905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_5feaf3b06fffb.pdfIn PDF document text
    • https://cdn.sqhk.co/rawavuzom/jjq8djg/biologically_important_molecules_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5fe1f9d25b2d0.pdfIn PDF document text
    • http://mini-cam-v2.club/year_3_numeracy_worksheets_free74dda.pdfIn PDF document text
    • http://copyrightnotice-ig.com/pingbingding_wa-2608_manualjgyvw.pdfIn PDF document text
    • http://raftgjgr.space/kikizukitikipigplvo.pdfIn PDF document text
    • http://chatik85939775.fun/spiritual_anatomy_book5r641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503387/normal_604d300a129d2.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/jchb6hf/communism_symbol_png.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/juvetaso/how_to_put_vivitar_speaker_in_pairing_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/battlefield_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/can_you_reheat_cooked_pasta_in_microwave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af0599b3-b3d4-49fd-9eaa-a52cefeab0a7/how_to_plan_a_review_lesson_for_primary_school.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/luzubenepujubuvov.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/video_klip_adventure_of_a_lifetime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c41c808-dd89-41b3-8fe7-b624a2841a91/data_structures_and_algorithms_in_python_wiley.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dee0579-21d0-4919-afb6-a438bb73d805/nikegoguronataveli.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/amanda_responsive_bootstrap_4_admin_template_nulled.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/devivipovabekam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce949c7-5cce-4c78-9b8e-59396e1a1a0a/ginojipu.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_off0000f6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A8 5224 bytes
SHA-256: e91e8cab8f4a0d1d3395480bee3df7e8387f4d7bceb06327de19d5068e535111
font_01_sfnt_off0001087c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087C 10604 bytes
SHA-256: 87ed96c2ed9f2720f840b9d0ff3e715d169d5494ad18258b22b9bf281ad0d322

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