Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23116e90bf0b6b9…

MALICIOUS

PDF

75.0 KB Created: 2021-05-31 17:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9957a3295151e6a380adf6bfd07f6a80 SHA-1: 7fe9dc640850468d8fbf1fff83a8c6561602f5d6 SHA-256: e23116e90bf0b6b92d9aa49a7995cedb4484c24661f3b7d714bde57281c0b182
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV detection and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URIs pointing to external websites, suggesting it is used to redirect users to potentially malicious content or phishing sites. The presence of embedded URLs and the overall detection score strongly suggest a phishing or malware distribution campaign.

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://laborke.ru/pbw?utm_term=the+automatic+millionaire+summary
    • https://vewifofuk.weebly.com/uploads/1/3/5/3/135394013/d6dd3aa7.pdf
    • https://gubepukabo.weebly.com/uploads/1/3/0/8/130873841/5875712.pdf
    • https://static.s123-cdn-static.com/uploads/4380068/normal_5fcf23d9f0f81.pdf
    • https://widobane.weebly.com/uploads/1/3/4/3/134340358/roxorodigita.pdf
    • https://cdn-cms.f-static.net/uploads/4452607/normal_60225a3b19ddc.pdf
    • https://static.s123-cdn-static.com/uploads/4481164/normal_5ff104e187281.pdf
    • https://cdn-cms.f-static.net/uploads/4451028/normal_6056c22c10f11.pdf
    • https://cdn-cms.f-static.net/uploads/4425229/normal_604d8b005ac3c.pdf
    • https://cdn-cms.f-static.net/uploads/4413012/normal_604b898ae0790.pdf
    • https://bezesigut.weebly.com/uploads/1/3/2/6/132681157/nijamadotelix.pdf
    • https://static.s123-cdn-static.com/uploads/4416304/normal_5ffba1a751085.pdf
    • https://pazowega.weebly.com/uploads/1/3/2/3/132303248/gosojefupu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xojifot.pbworks.com/f/fufabo.pdf
    • http://mumubib.pbworks.com/w/file/fetch/144413301/82647769637.pdf
    • http://supatibu.pbworks.com/f/mengubah_ke_word_bisa_di_edit.pdf
    • http://xedidovetaw.pbworks.com/w/file/fetch/144416892/adanga_maru_tamil_movie_download_tamilgun_hd.pdf
    • http://kolasotosexu.pbworks.com/w/file/fetch/144413529/puvatiloragoziv.pdf
    • http://xoxafepapesu.pbworks.com/f/20571642886.pdf
    • http://jesababa.pbworks.com/w/file/fetch/144413904/how_to_cancel_google_play_refund.pdf
    • http://dekokos.pbworks.com/w/file/fetch/144414498/vekofezavukafexid.pdf
    • http://viluxese.pbworks.com/f/ptv_sports_live_official_apk_download.pdf
    • http://jesababa.pbworks.com/w/file/fetch/144415806/convergent_vs_divergent_thinking_reddit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e67f.bin
1fa5dc7383d71c46a08af65eec7bfbf68669ad7441d28d7ca3aa2a857cb98003		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 5092 bytes
font_01_sfnt_off0000f7a4.bin
5cb5d19440999be6df6980cb9e81fb66753e116d95db63e0938ade851e51fe4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A4 11380 bytes

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