Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b31c44d92c0c28…

MALICIOUS

PDF

72.8 KB Created: 2021-01-21 14:50:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 89056f13957edeba0223bbe168a6fe65 SHA-1: dfd6da1ad4505e879da505eb6697c288df94a836 SHA-256: b3b31c44d92c0c28735605041270ecf72a3e7283f91c259788a012574f112ae5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or phish for credentials.

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/123?utm_term=dining+out+guide+medifast PDF link annotation
    • http://virutimi.22web.org/descargar_age_of_war_2_hack_apk.pdfIn PDF document text
    • https://site-1177315.mozfiles.com/files/1177315/bachelors_in_business_management_jobs_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421214/normal_6005ddd7de1f8.pdfIn PDF document text
    • https://cdn.sqhk.co/xegogeji/ejehbzB/business_strategy_manager_microsoft_salary.pdfIn PDF document text
    • https://site-1176402.mozfiles.com/files/1176402/1896302231.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/iixgeBI/lidalum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_5f91a9e71c1ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_5f8e7b0945aae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5ff2403f8f3c7.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/6gehfhi/twisted_metal_ps3.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/jbDibgh/13349741742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_5fd7110eb6250.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/sulasatevirexo/atomic_mass_calculations_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/zobebapake.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/free_product_catalogue_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/69832936083.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/implant_surgical_guide_lab.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_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 5100 bytes
SHA-256: dc4c10c56ad7a696e17a34c4023115589cc4ebe1a4a53e59cde6324a64e0fab6
font_01_sfnt_off0000f03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 11288 bytes
SHA-256: ea6af06810edecd3bc6164e15d2e7334e8ec42af250a1932367c13847100258c

Open this report in the interactive analyzer, or submit your own file for analysis.