Malicious PDF — malware analysis report

Static analysis result for SHA-256 265977fe8b6369fb…

MALICIOUS

PDF

67.3 KB Created: 2020-11-24 21:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 56689996b692fa1576fdceb04f00030d SHA-1: dcfde6ede1b05064556d9ab00f113a1f6b20d5fa SHA-256: 265977fe8b6369fb874c831f27e9145d4fecf7976129286d18bb09725130cd58
104 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. It uses an urgency-based lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=top+of+the+ninth+meaning PDF link annotation
    • https://dexoxewivovevub.weebly.com/uploads/1/3/4/3/134322619/6478667.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/siruw-pukoguwejalezid-movude.pdfIn PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/d1449ea771a4d66.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/5552995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413373/normal_5fa8009698d38.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/dc9db35b-d4e5-4f39-a3c5-4503ac548548/customizable_baseball_lineup_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/bosibed.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/vuwexukozuxuxebolobome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88803ed-04bb-4bdc-87a5-da5ab0a688ac/mexeniragowoloz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38faa3c1-f482-4a4d-abe7-d45dcf75ac7c/gaxebelariduvig.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/bloom_s_taxonomy_three_domains.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_off0000caf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF6 4960 bytes
SHA-256: 0227c9065fc994afffa18bdb5a6d9fee0bbee60e48d10891470dd130abbf5e8f
font_01_sfnt_off0000dbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBB 10808 bytes
SHA-256: 4839930fd2aeb64fc010eacbcc7070cd803ef1b7e653dd45bb7e260582407acf