Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b720dce6619914a…

MALICIOUS

PDF

72.4 KB Created: 2021-02-16 10:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f79eb5499f5142ec348b607a1d028d1d SHA-1: c6d4b2d34ec0d0af9822295537ff196b7ebee981 SHA-256: 6b720dce6619914ace5b53190ae27b556d8da2dc6b618718a775c42583d9987d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, redirects to a phishing site disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to lead the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=what+is+the+most+famous+quote+by+franklin+d.+roosevelt PDF link annotation
    • http://libralab.digital/40830319354rskjw.pdfIn PDF document text
    • http://bunnygummy.ru/67426370911hww35.pdfIn PDF document text
    • http://hangookoil.ru/roderuposomizugemuwiaikh.pdfIn PDF document text
    • http://usacreditreport.info/88216566720bzi4o.pdfIn PDF document text
    • http://togusavek.22web.org/barish_status_video_free.pdfIn PDF document text
    • http://newberginvestmentproperty.com/bizakojidusatet4mmgp.pdfIn PDF document text
    • http://yourcy.com/catcher_in_the_rye_cast88nbl.pdfIn PDF document text
    • http://ipatovaalena.ru/drinking_alcohol_video_songsp478p.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/xazarujokemus/bonumutolog.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/71233744116.pdfIn PDF document text
    • http://vajekalisafemun.rf.gd/dark_web_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/diccionario_bribri_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/36297293470.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/58600507852.pdfIn PDF document text
    • http://masomoxesezog.rf.gd/manual_programacion_arduino_uno.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_off0000dbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF4 5684 bytes
SHA-256: adc8b7ab373626dcf32f3dc5925ec89215bc4caeee5570068219123d8fbe15f3
font_01_sfnt_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 11008 bytes
SHA-256: 4ba1d43f8e18d97b887c24d0304907692bb1922216e78bcf1ba711b7b1a17a38

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