Malicious PDF — malware analysis report

Static analysis result for SHA-256 463baa51461fdf3b…

MALICIOUS

PDF

71.6 KB Created: 2021-02-19 21:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 53c223c02e08e1d88e408d420fac6385 SHA-1: 470b2eb80c6248cda8fe050754872c6ba1b248c9 SHA-256: 463baa51461fdf3bc2d1238ef2dcd6156b1df37f9b262c4a7e86dd748ded9bd7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for free copyrighted material, likely to trick users into downloading further malicious content. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of multiple unknown URLs suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=read+allegiant+online+free+pdf+no+download PDF link annotation
    • http://mx50off.pro/352021158731fuhu.pdfIn PDF document text
    • http://igclienteam.com/barbaresco_2015_vintage_reportf3ixv.pdfIn PDF document text
    • http://hopecommunitynaz.com/my_sims_3_mods_folder_downloadrjl4y.pdfIn PDF document text
    • http://cesaregaspari.com/47482814323ehfcl.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/NEigidi/37184464495.pdfIn PDF document text
    • http://japancar-sib.ru/hola_amigos_textbook_answerscvs4a.pdfIn PDF document text
    • http://pestore.pro/xigudexlcz0v.pdfIn PDF document text
    • http://storeplus.pro/218896028937isem.pdfIn PDF document text
    • http://6gusevshop.space/jexotabunizofusuta987aa.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/nefagolom/future_trends_in_airline_industry.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/wefbee_liker_app.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/pictures_of_different_types_of_wall_texture.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/39664067189.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/54276233985.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/android_root_control_app_permissions.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_off0000dd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD27 5132 bytes
SHA-256: e0643f1cb252d0c20303b785545151e7d261c0bac1039426e704f83dd66e9e80
font_01_sfnt_off0000eec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC6 10340 bytes
SHA-256: 535db5f91fc0fcee9b9f3bc4122c3834289dafdafec62551d48eecd149c9f479

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