Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86c5343a5cac0ac…

MALICIOUS

PDF

117.3 KB Created: 2021-03-24 07:43:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 66d0ddf3428a2c6f2623b3ab7a10c398 SHA-1: acbab3a935777dc1ccc1ef0f4bf041a57a700680 SHA-256: f86c5343a5cac0ac5d26fc033bf05d5830d26426871c68d74cb9ecb81335023e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely as part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=even+piell+voice+actor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384159/normal_602b571c2a2cc.pdfIn PDF document text
    • http://dokojusekorukuf.iblogger.org/hernia_diafragmatica_congenita_pediatria.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418781/normal_5ff22ab9a6acd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_604a13125516e.pdfIn PDF document text
    • http://nuzenupezebep.iblogger.org/fabazituxo.pdfIn PDF document text
    • http://fudidudigas.iblogger.org/advanced_financial_accounting_and_reporting_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wixanarer/anti_terrorism_training_post_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b0dd4a1-0e7f-420c-b1c0-d3e55ba75513/walupigogodefimowenuj.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/kenmore_quiet_guard_2_dishwasher_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6333aef-27bb-4260-b38c-d38de7baaf25/air_standard_assumptions_brayton_cycle.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/gramatica_direct_object_pronouns_worksheet_answers.pdfIn PDF document text
    • http://losalevova.epizy.com/jotozabewi.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/58298399483.pdfIn PDF document text
    • http://dewudirana.epizy.com/21688641305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/331c59df-7082-4bbe-addf-36d717590c5a/26832192832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9125d83-adfa-45b0-8775-d715239a0495/best_witcher_2_mods_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/what_is_the_significance_of_milk_and_honey_in_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/android_studio_github_account.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10f3ad16-d42f-4fdc-9954-e8b692bf2073/valogopedofabo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001829a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1829A 4556 bytes
SHA-256: 5703537e6d729f0c6049274378e058e1e6b25ae00c16a98370e47567c05523ea
font_01_sfnt_off00019214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19214 12200 bytes
SHA-256: efe7e8335c88583548b1fe93ef4786eea7904433e8dc2fe8a9035f084ac4f8bd
font_02_sfnt_off0001b9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9D7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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