Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c4009aa37044b7…

MALICIOUS

PDF

122.5 KB Created: 2021-01-09 06:21:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ed6439f9d412fe0fad4741f20c05985e SHA-1: e973a0eb274ad8b7f9feffa620344d5135da821c SHA-256: 40c4009aa37044b7b3d1eed08d7161cedf2030298b7f5a729f82555413262fc5
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and contains a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain metadata related to the 'Ocarina of time any route' lure, suggesting a phishing or scam attempt. The embedded URL is likely intended to lead the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://traffking.ru/123?utm_term=ocarina+of+time+any+route In PDF document text
    • https://cdn.sqhk.co/xufatirumina/hB6czhg/3397796482.pdfIn PDF document text
    • https://cdn.sqhk.co/kezinujus/liDiidN/9185220728.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/ihcDwNA/dot_to_dot_puzzles_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/monazaxumol/258ibJf/81957267933.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/aihhcK8/buwefudojinupisap.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/32j1BBN/kisowuxetoj.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/aXie6ha/61379529575.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d7d21b-9fb5-44fd-b5de-8234a9b9def3/understanding_nutrition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b421038c-9408-42fa-b51f-f452d1a7e627/where_to_put_github_on_resume_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6da6d766-a8c1-41ba-bf48-7546eafb6dc4/nipaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/xoxixifonewopogu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/fire_department_training_report_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c4903f-85ab-477f-bc36-c87f3ca2191a/nufebodaditidizodufim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a69ca5-36c3-4cb7-96aa-4c6c5a09837d/36444741126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f841d745-1063-4e88-9826-d0d9c2c16e70/64283003.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_off0001a7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7FC 4948 bytes
SHA-256: 6f16d629634d86db1e280340fd4ca5cc9f9122c84a454aeaee15836103f2471c
font_01_sfnt_off0001b8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8C7 10768 bytes
SHA-256: a5857e641b37b95431370860251cb050275a8b4f5a6c9413653bde3c16ee2385

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