Malicious PDF — malware analysis report

Static analysis result for SHA-256 9794f4aee3ceb979…

MALICIOUS

PDF

68.8 KB Created: 2020-11-16 16:45:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7c81ed9222b70be6c1e83fef59ab72bb SHA-1: dbef2a2f30bd570541b30fa2936488628ca67083 SHA-256: 9794f4aee3ceb979574e27f79ad19bfc875c498ff9bd2e09a2e2eb4202a650e4
96 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 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://traffine.ru/aws?utm_term=design+of+counterfort+retaining+wall+excel+sheet PDF link annotation
    • https://zomomawiwupid.weebly.com/uploads/1/3/4/3/134385308/286c6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f8b0a9527c1c.pdfIn PDF document text
    • https://lupexepiw.weebly.com/uploads/1/3/4/3/134318885/zumusok_bamapexuju_xenos_fosumagurabusit.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/sukuta_poduzazoxozewan_juxogegama.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/vukavofoges-rigerodime-jadupozatifen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406812/normal_5f93d39c480d3.pdfIn PDF document text
    • https://kipugawek.weebly.com/uploads/1/3/4/3/134364137/8698566.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/a1efc681-e291-4643-841e-ae8ec420e2b9/66570452605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/befbae4c-8a89-4de5-a204-3ffa03e02ae8/73651675681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53575054-d750-4f0f-b600-2b5e01afad2a/nofazamivixojupax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32dace0d-dddd-4657-b95f-89594dd28843/bisukadokomirojuvoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d409973-84c9-48fe-b059-5b1027dd92ff/xuguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64752d42-bff9-4841-816e-6c8883a0215f/vitality_medical_salt_lake_city.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_off0000cf32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF32 5304 bytes
SHA-256: 26c886d61861ce5c61562d209bdea6b5f59b0bacb77133923775ff48f44814d2
font_01_sfnt_off0000e157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE157 10784 bytes
SHA-256: 037de7d6dd0b0484962feee6521b562eda52a70e0518ddaec08b3cc69376586d