Malicious PDF — malware analysis report

Static analysis result for SHA-256 82479b0febaff20d…

MALICIOUS

PDF

74.8 KB Created: 2021-02-16 12:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 039ed7d38c0c5bae4f210e1c9e33b00e SHA-1: 45d1ecd89f08f3272fca789c53a9aced6a193d3d SHA-256: 82479b0febaff20d65646658f87b48eda3b01651edf36342ff3daeba1fcfe5c8
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://baarspo.ru/strik?utm_term=how+to+read+wind+load+charts PDF link annotation
    • http://jovanilimifolom.22web.org/microsoft_excel_2007_tutorial_in_hindi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424672/normal_5fcbd3e8af24a.pdfIn PDF document text
    • https://cdn.sqhk.co/xagegegozi/aqkcgdO/lodul.pdfIn PDF document text
    • http://xavukagidasali.iblogger.org/emulador_ps1_android_apk_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383929/normal_5fefcd1f81002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453563/normal_5fd2eae8cb945.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379477/normal_5fcdc07b9c554.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/JiafUhi/belenibap.pdfIn PDF document text
    • https://cdn.sqhk.co/dawolesirip/Sje1MxB/mtg_war_of_the_spark_standard_decks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5fcb6389a469d.pdfIn PDF document text
    • http://xosuvirakogaf.iblogger.org/wiwororifa.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/gfhdARq/71281077518.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/icBq5TF/25136603257.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gadudadu.rf.gd/information_security_hot_site_definition.pdfIn PDF document text
    • http://wigezenefibi.epizy.com/zolen.pdfIn PDF document text
    • http://dupivet.epizy.com/chemical_reactions_and_equations_review_answers.pdfIn PDF document text
    • http://pajamubo.rf.gd/aomais_go_speaker_manual.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_off0000e8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C6 5080 bytes
SHA-256: ccc928057e858ae1479588367007d5e4ddc91bf97682abfcd89447f52e4f0a84
font_01_sfnt_off0000fa14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA14 10472 bytes
SHA-256: af16f749d26eebfeb91233319dffe5d56e5c0d254b1af818a5c4ede44acde236