Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b62e20313bfb160…

MALICIOUS

PDF

64.0 KB Created: 2020-12-02 01:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 467c828f9bb85798959d88999101ec11 SHA-1: d3534870bd3fb087d28b3c40be6cf6ba5d226b13 SHA-256: 4b62e20313bfb160d2f4cb2aed83247352d4f1c71a9d0ededbf014fb74d325a7
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=sony+bravia+motherboard+replacement In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/bdo_sorc_gear_guide_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b6565687f52b6ba20cda/t/5fc6970161e25426e11eb169/1606850307101/download_balls_brick_breaker_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/30291441947.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/wen_4212_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/52866221424.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/8309282585.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a204f98375720d78a86/1606375970723/mega_man_x4.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/gizakefuwelisuzonevuzi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ce745e8e827d429a49c0/t/5fc6c1f648d5672cfb282727/1606861303598/xejamokevumobiwugutasamir.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/waboxo.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/69648781886.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/project_scope_statement_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/football_manager_touch_2016_free_android.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_off0000b177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB177 5540 bytes
SHA-256: 77ebe4f562fd45f554507e02b0bf18c5a660aa1a97182a8723731ddae15bf5dd
font_01_sfnt_off0000c42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42A 2568 bytes
SHA-256: 833a8e08c101752958905b360f322e24be74c2cb1d8020784bbdfd353a44fc06
font_02_sfnt_off0000cf8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8E 10544 bytes
SHA-256: 2d2dfb4dbcbaad258d7b7b23bd054b0c1074957a4e6024bb9c1c0f49252ca08e

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