Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd13963b471b929…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 10:02:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ee120d074b9e597152f250a13bb660ad SHA-1: 73e24800f6aefa321d2d30bf48518ec45909a15c SHA-256: 6bd13963b471b9292cad7f75bfd87f21b9e952123306619199478ed6552a6141
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to trick users into visiting a malicious site, potentially leading to further compromise.

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://leonvi.ru/strik?utm_term=problemas+economicos+en+el+mundo PDF link annotation
    • http://zugemenelil.medianewsonline.com/41734036574.pdfIn PDF document text
    • http://tubudemawaxoki.iblogger.org/3835883633.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/48717568985.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/31378047519.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/51825935333.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/samsung_dw80j3020us_parts_list.pdfIn PDF document text
    • https://cdn.sqhk.co/xedomobedusi/yLibDjb/horses_running_thru_water.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/ziwuvijevo/zidugumozizuvidi.pdfIn PDF document text
    • http://zafebofegev.epizy.com/83461185296.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/agriculture_polytechnic_study_material.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/davakosutorimigix.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/axis_direct_trading_account_closure_form.pdfIn PDF document text
    • http://wuzuzifo.epizy.com/detailed_explanation_of_non_coverage_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/jililol.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/galasew.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/14385292484.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/pak_navy_jobs_2021_for_female.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_off0000defc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFC 5228 bytes
SHA-256: 2917ce2a2672e275a95b3a2ae72656bf1f4c5ea3bde89ceb6a4126d6570693a2
font_01_sfnt_off0000f09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09B 11236 bytes
SHA-256: 4db97c8c473bc9d019da6e49cf743d3342222ce3618d1150c3d68956e8f6ac6d

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