Malicious PDF — malware analysis report

Static analysis result for SHA-256 0293d71eb972af4b…

MALICIOUS

PDF

73.5 KB Created: 2021-03-18 02:20:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 6e16af3e13a2881b0eb2a546a7705798 SHA-1: 2d3a9913817fea74485d1fc5c3f8a2c148fbc641 SHA-256: 0293d71eb972af4baee5f0564f312629651a278bbd4cc3d8371c1f7c67138d6d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'kuzutuzo.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body appears to be obfuscated or corrupted, but the presence of the external URI and the ML/ClamAV detections strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=you+are+beautiful+lyrics+and+chords+christina+aguilera PDF link annotation
    • https://cdn.sqhk.co/savageven/qTgghgY/91408156502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401983/normal_603aaf23eb15d.pdfIn PDF document text
    • https://cdn.sqhk.co/dosazuleg/ekhh1ja/easa_pilot_logbook_excel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499300/normal_6008fc0faa713.pdfIn PDF document text
    • http://pobibuja.22web.org/daoist_alchemy_nei_gong__final_edition.pdfIn PDF document text
    • http://xiweloju.22web.org/how_to_find_the_exterior_angle_of_a_kite.pdfIn PDF document text
    • http://mowatin.iblogger.org/noteve.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/nuxulikiwab/35428606184.pdfIn PDF document text
    • http://tanofekomom.epizy.com/wujakekopetuperuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/lubakexurezixokar.pdfIn PDF document text
    • http://fifawuzajulolu.rf.gd/que_son_las_cadenas_alimenticias.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/hard_reset_asus_dsl_ac68u.pdfIn PDF document text
    • http://fusifovizit.rf.gd/water_under_the_bridge_original_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/6563305997.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/shin_chan_comedy_video.pdfIn PDF document text
    • http://sezifusina.epizy.com/akelarre_guide_michelin.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/wadow.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_off0000dcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF6 5484 bytes
SHA-256: 614bfa375e424f7da5c9a2b773e53a4f926d7e0229b2e8d11d8890bbbbd9bd1b
font_01_sfnt_off0000ef9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9E 11808 bytes
SHA-256: 13f5697a4bda1f429023393c50a15b927614544e9314f266a0d1d5d18452c096

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