Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c02d2a76cd2ee0…

MALICIOUS

PDF

73.0 KB Created: 2020-12-19 19:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a320b8d0313f64c3a55e38aa56de91a4 SHA-1: 783e59839c373bddf97ffe7ccc2e3298fdc5a201 SHA-256: b6c02d2a76cd2ee0e336577f44463285102324310c93c8c03b16fb6fe265a0fa
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 0.9997

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://trafffi.ru/strik?utm_term=los+5+lenguajes+del+amor+pdf+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5f9867be87e2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_5fa771ecc742e.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/5fbfd2c30b6b03258f2f7c3b/t/5fc81d5292e74531f3be6eab/1606950226266/john_gba_lite_download_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbac58a2-31fa-4882-97a4-5f0b10e098eb/tepufapazuzolejurofonude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ea2cfc-5506-4eca-85d0-0e864767b4bf/jerarquia_de_operaciones_basicas_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38839e2d-c8d1-4a06-bd58-88823ed64f4e/49652793881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6a3895-36ff-4e38-b0ca-ba9265e09c00/war_allusion_in_lord_of_the_flies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c2a6f3-229e-4bed-8381-e35cc5231253/58907687354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a204c60c-4c21-47a8-963c-ed91a631c82b/25317024405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049b50cf-2cbf-4cbf-88ff-a84f4a183fd8/99989533681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c3ea797-dd03-4e10-a673-5052901037b2/48290888912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a00296-3c9c-4c75-8c80-f13293097d92/76159798705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef0b92a-e6bd-4d6a-a554-584f1251f8bf/gijapegemaramapu.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_off0000de15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE15 5500 bytes
SHA-256: b31bb29c7ee7086be4e3cdacff3622feaa44f59d8440b8b700ebb56312992803
font_01_sfnt_off0000f0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BE 12252 bytes
SHA-256: 4ef10a792a93ae39a28968bca71c743ace1fb8f0de0513b11124444a18dcb408

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