Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad3b5093b31456e…

MALICIOUS

PDF

73.6 KB Created: 2020-11-24 01:33:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f55681d0128aff8c45f59ae7db5fdca8 SHA-1: d8b53aab313e9000a78320ad17ee409d2c454348 SHA-256: cad3b5093b31456e9a7a9e90ccbac3178944a6d997d7a80845072a0c7d9b0908
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/strik?utm_term=100+question+answer+sheet+fill+in+th PDF link annotation
    • https://xinejusitap.weebly.com/uploads/1/3/4/6/134630468/jatejuzovivaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_5fb86c13403e7.pdfIn PDF document text
    • https://kibodowusi.weebly.com/uploads/1/3/4/5/134588916/wetex-seloforan-zobale-ranopavakuvol.pdfIn PDF document text
    • https://tarivoda.weebly.com/uploads/1/3/4/6/134693378/8ddeb4b2fe.pdfIn PDF document text
    • https://xuxixoxeniti.weebly.com/uploads/1/3/4/5/134585484/tukenu.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/11e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412889/normal_5f9ca12302a93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5fbbdbf6eb59c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_5fa9a3df519a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_5f9fdb854ce53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_5f9d24249fcc4.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/86eb9b59-147e-4d4a-92cf-b5926cf4b57b/kuwozesifozejumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2b31b2-4363-40e7-86b2-453a762880ee/83312155966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78cc9f6-f576-4516-b54f-4f557af3bf52/phonics_ai_ay_worksheets.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_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 5172 bytes
SHA-256: 378014856a8f30b1dd3e65f616f83c5aa08ce07c09a3c1a37a9bc670295e92f9
font_01_sfnt_off0000f3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E7 10936 bytes
SHA-256: d2b5d159b69f2f5f342814d95ccf70ce0783c096f846d0222640cd8f3fa69225