Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e8e5abf52b04ff…

MALICIOUS

PDF

64.7 KB Created: 2021-02-23 11:55:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 829013565e8e67c045c517326a2d77ac SHA-1: dc810f2216e02bb19b5e9e815cc01992d73a614f SHA-256: 07e8e5abf52b04ffdfd5259697d6d2e500d3e8adb5d1466b914df5849a372daa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for phishing and SEO link farms. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics indicate a high likelihood of malicious intent, specifically identified as a phishing trojan. The embedded URLs, such as 'https://bologen.ru/strik?utm_term=dt466+for+sale+near+me', are likely used to redirect users to malicious sites for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/strik?utm_term=dt466+for+sale+near+me PDF link annotation
    • http://vatologox.iblogger.org/latumuwep.pdfIn PDF document text
    • https://leditolovon.weebly.com/uploads/1/3/2/6/132682688/zusot_xijavizofox.pdfIn PDF document text
    • http://reduslim-ufficiale.website/30406609475rj89.pdfIn PDF document text
    • https://fobanuvoba.weebly.com/uploads/1/3/1/6/131637247/batazugelixojix-lejepomini-xokakiwabeno.pdfIn PDF document text
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/1097684.pdfIn PDF document text
    • https://nuvarimo.weebly.com/uploads/1/3/1/3/131378817/9936976.pdfIn PDF document text
    • https://zogopovedizojux.weebly.com/uploads/1/3/1/4/131408172/gosojizumojorel-sixiroxi-dafet-samakiwakaluj.pdfIn PDF document text
    • https://fezipogapatud.weebly.com/uploads/1/3/4/8/134888370/6517861.pdfIn PDF document text
    • https://bifugojatomawak.weebly.com/uploads/1/3/1/4/131437093/sitov.pdfIn PDF document text
    • https://gukofatupov.weebly.com/uploads/1/3/1/0/131070505/4918db.pdfIn PDF document text
    • https://movakesomerinid.weebly.com/uploads/1/3/4/5/134528648/5470627.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/zosukogokada.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/tobof.pdfIn PDF document text
    • http://fedavuv.epizy.com/3526300496.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/tb_ki_full_form_kya_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/airlift_performance_bag_review.pdfIn PDF document text
    • http://mosasawimip.epizy.com/espresso_android_course.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_off0000c2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B2 5156 bytes
SHA-256: 91dc78a01f01cc0cfc2d6d1926fe3dd260fc029002fe261a2f8b8f6eaaf661cc
font_01_sfnt_off0000d431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD431 9904 bytes
SHA-256: 9d4973caa85c757078fb846591fabb7628b86bd86ff0d9563f2226a8213da620

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