Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d8667302d7ae53…

MALICIOUS

PDF

72.3 KB Created: 2021-06-04 23:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3ec648e49e6e66122749e9872bd5ba38 SHA-1: 1a4a122d4d02aff34eef24ef30a98b2a5b35210b SHA-256: 38d8667302d7ae53d632b6d1ce5bc687d76caac7a645a506322d6c0e03097c8e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. 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-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://drafthe.ru/pbw?utm_term=evaluation+cm1+complement+du+verbe+et+de+phrase PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451027/normal_606bee35c8d3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_604503a7d578e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411229/normal_5fdef54d4fe13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450338/normal_60371366ad52b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5fe05913543f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407318/normal_6016f0c544d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_60601c34bea33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_60684437aed95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503791/normal_60406c58dd87f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_601faec241ced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_600264a8d53d3.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/257f4e94-a44a-4f56-aef1-e8893a69c05d/central_pneumatic_3_gallon_pancake_air_compressor_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9364d41a-f7df-4260-9c71-71da42c4cda8/tafozaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc100ada-7768-413b-add1-c769861a1e88/57842585100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e55a6c-b3c5-4ec6-8924-41c4b10250fe/el_seor_de_las_moscas_pelicula_descargar_espaol_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a42e8f0-8051-46a5-a29d-5b632e7dca43/ninja_blender_nj600_lid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef7b9e9-8743-4412-a83f-38729157ac17/sujawugijeroso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95366993-65be-4192-a55e-aa2fdd9d01a8/lesson_8.2_skills_practice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0985fbd6-0b2a-4170-84fc-ff2d66a659ba/76106732600.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_off0000d7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BB 5524 bytes
SHA-256: ceee753078a381c46e24dfd87c74e07408c756fb75c847621fcb8b9ce6b7488b
font_01_sfnt_off0000ea5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5B 12560 bytes
SHA-256: 58ff90ed7e47e1cb6077c2fdd41f88d927af8da22ef00589cae88138cc60ec06

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