Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f888e3bdf3edce…

MALICIOUS

PDF

73.1 KB Created: 2021-03-25 17:37:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 85f24c1265ac899cf6d580ed01a99383 SHA-1: d31cad969693c864932a675b1597b2478d03caf6 SHA-256: 71f888e3bdf3edce810264805b046ffd2552c651315e8f4eed4a8bd0b20b5f7e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to a 'Linden travel alarm clock'. The presence of embedded URLs suggests an attempt to redirect the user to a phishing or malware distribution site, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=linden+travel+alarm+clock+made+japan PDF link annotation
    • https://cdn.sqhk.co/gazamara/Wnij9HW/rezipefogaleto.pdfIn PDF document text
    • http://fagilef.getenjoyment.net/4959141223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408184/normal_6027f4c610c93.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/78kyn6c/76148518438.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5fe8127b23021.pdfIn PDF document text
    • http://lipuwisapi.mywebcommunity.org/26272404728.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzabajixiw/gvhfhgT/wopuluwagidewetirapezevi.pdfIn PDF document text
    • https://cdn.sqhk.co/tovitaxani/eghLhe9/37306769005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5fdb2eec3070c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakazasaravi.onlinewebshop.net/statistical_tools_for_data_analysis_and_interpretation.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/20560878570.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/oracle_sql_multiple_rows_insert.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/dowetotu.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/dodikudafeburevejaxifuwoz.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/gupaxivosebizos.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/zokuwimezafafakuna.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/abc_letters_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/35324330274.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/27636016848.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/josibero.pdfIn PDF document text
    • http://temolujipu.myartsonline.com/fashion_branding_strategies.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_off0000dfa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA4 5184 bytes
SHA-256: 59b2b1ed8ea5ad565fb966e3585269182706d404302d7642f8d2aa69684e5ec6
font_01_sfnt_off0000f141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF141 11040 bytes
SHA-256: bb188772a3cc415484fb9f87c2c07b9e0f95314da8d044e893db95f1b2c022e8

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