Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c119476ee9fac4…

MALICIOUS

PDF

76.3 KB Created: 2021-06-01 03:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2736637c1cc5523d4543119d755d306 SHA-1: 1406f6b35c967bf69924974d68a8df4b87aed220 SHA-256: 63c119476ee9fac408bb3232680070d888955125f607f67ffda46ea43e82f41a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'garglob.ru', which is likely part of the distribution mechanism. Although no scripts were explicitly extracted, the PDF structure and the nature of the embedded URI 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://garglob.ru/pbw?utm_term=warren+berger+the+book+of+beautiful+questions+pdf
    • https://static.s123-cdn-static.com/uploads/4377933/normal_5ff681112f1ee.pdf
    • https://static.s123-cdn-static.com/uploads/4375690/normal_5fe1eb959f61b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wekibivu.pbworks.com/f/malena_full_movie_download_in_hindi_480p.pdf
    • https://uploads.strikinglycdn.com/files/d68607bc-e2f2-4e0d-ae2f-56d9c91d128c/nomodosokexakidubixefeju.pdf
    • http://xalomuzavege.pbworks.com/f/79598272258.pdf
    • http://natizasex.pbworks.com/w/file/fetch/144412494/python_programming_darshan_download.pdf
    • http://vadibun.pbworks.com/w/file/fetch/144434763/minecraft_xray_resource_pack_download.pdf
    • http://memofemovo.pbworks.com/w/file/fetch/144438003/busqueda_implacable_2_pelcula_completa_en_espaol_latino_descargar.pdf
    • http://taxexuwej.pbworks.com/f/what_was_the_ten_percent_plan_quizlet.pdf
    • http://xutosop.pbworks.com/f/calculus_early_transcendentals_8th_ed.pdf
    • http://bupataved.pbworks.com/w/file/fetch/144419772/les_alphas_livre_du_maitre.pdf
    • http://wuvebag.pbworks.com/f/wijujagiwisegakoninowekit.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144423276/sejitisurifiron.pdf
    • http://wozixokumo.pbworks.com/f/how_to_make_facebook_dark_theme_on_android.pdf
    • https://uploads.strikinglycdn.com/files/021db99d-d40d-494b-bb54-5ef34b7fc24a/rujopefur.pdf
    • http://pokuwatosat.pbworks.com/f/28297518654.pdf
    • http://siruzosu.pbworks.com/f/63900841784.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_off0000e498.bin
03eacb8cbc3d3938315bb7a378aa469e8ffe77409a08f85fbab03a4cec1db35e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE498 5648 bytes
font_01_sfnt_off0000f7cd.bin
78e2f7d9898188eadc937d4d88510c14cf0c50f217d873528a5f9d6f338b108f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 13720 bytes

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