Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c58c932446081d…

MALICIOUS

PDF

70.4 KB Created: 2020-12-17 06:58:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 46444479ddd180a809062bea465f2c11 SHA-1: d0fd5eab182764e1a73b69f2fee9d2daa795cb05 SHA-256: 22c58c932446081da9e8d2756f891c08c7562d1d5cfe5b8a99357b258a2a6471
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to deactivating a Fortnite account. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=how+to+deactivate+your+fortnite+account PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369766/normal_5f9f7af6629bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5933e3dfdd95b60f4df7d/t/5fcc5d407ae85b53b288599a/1607228737471/wamodepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/467c50dd-a1e4-43b1-a920-c497aee3e418/81671565959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deafcbbd-4738-41a9-b52c-3c66a3ff3a97/mcgraw_hill_my_math_grade_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e622cdc-731a-4125-af97-b79edd7c020f/cisco_commands_cheat_sheet_ccna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032cb791-bf56-47c5-8fec-6ddbcd247ce2/integrated_math_2_big_ideas_math_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfeb92dd96f5918b48e98/1606287033613/everstar_mpn1-11cr-bb4_parts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc198ffeaf37e3b64d8a3ea/1606523135399/hersey_high_school_closing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd80a2a8-7161-4d57-b5f6-96d146614382/23277719005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814b257c-959a-4470-929c-45d13fc92bb9/zibuzowidogof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c667062-fd4a-46df-9894-16d96ca8bbed/sto_tetryon_build.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cfeb3b-21cb-46da-b654-55bf6c0951b1/fewopezafafu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce152269d6d20b2bfa0061/t/5fd146d25a35a86a4756173c/1607550674897/head_basketball_unblocked_games_6969.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_off0000d7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B8 5020 bytes
SHA-256: b0c6d62e79609369bcb5b45be2bae8ec87b813b7d6399e45f680b4ff12f84757
font_01_sfnt_off0000e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F9 10376 bytes
SHA-256: 0924b904b80f82c261ec43c70df0a7fc0f1b9966f8cc36ba7f503ea405f3e70f

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