Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e84a71a3a60b46e…

MALICIOUS

PDF

102.9 KB Created: 2021-03-06 13:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acd57ad2d993e7213abbaffdc69267b1 SHA-1: 2108f75eb4572ee7964c6611a33d9dc60e51707b SHA-256: 9e84a71a3a60b46ea8e38833afa8ff16fd2f8b1288dba89409759266be1cefa4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The embedded URL points to a suspicious domain, likely intended to host further malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=who+are+the+12+disciples+names
    • http://ukranews.site/american_football_players_namesxetq8.pdf
    • http://hookup757.fun/ejercicios_de_escritura_para_primer_grado_de_primariaawrsy.pdf
    • http://usechambre.xyz/64701399049frjl9.pdf
    • http://kneeksi.ru/vawizuletjd67.pdf
    • http://zolekumosex.iblogger.org/airmen_of_note.pdf
    • http://power-guard.shop/88187032203qkdnd.pdf
    • http://interbank.link/16992377456jws0c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://norilonabu.epizy.com/car_game_apk_new.pdf
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_f42c5c215d9347c0893ff91a74576ab3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/93f41e3b-04f9-4da7-8d5a-b13d3bb3de2f/where_to_purchase_scantron_sheets.pdf
    • https://uploads.strikinglycdn.com/files/07749ec5-9827-469a-a8af-ac4a43fbd9f7/wolejajokuwidowekuk.pdf
    • https://uploads.strikinglycdn.com/files/13084cfd-3563-4706-9b70-d4ad2a00ecf7/lurafitapeneji.pdf
    • https://uploads.strikinglycdn.com/files/e7ab677f-83a2-4b73-9652-f803aa466bf8/34598556108.pdf
    • https://uploads.strikinglycdn.com/files/b6a1178b-be95-452a-a0cd-dc8ab10ae0f4/que_significa_tener_un_estilo_de_vida_saludable_segun_la_oms.pdf
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_a4d63e1dd305436e84682f2a89f8943c.pdf?index=true
    • http://nomekerileme.epizy.com/agglomerative_hierarchical_clustering.pdf
    • https://uploads.strikinglycdn.com/files/f34dff52-67ef-4b11-b248-1f163e9d3a35/child_health_care_plan_template.pdf
    • http://jejuton.rf.gd/doronogepoturuzaseb.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013aa7.bin
2a9ab6ad5f48e7eafa3450a89caf5549254347a4f3832f0558d9a2d7efe82d69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA7 5508 bytes
font_01_sfnt_off00014d50.bin
c93c3c6a9df159338e63a3f1f1c22f5f39ffb8faa7cd917e1d4d796c124b36f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D50 12528 bytes
font_02_sfnt_off00017664.bin
946bad0bbf0618d384572ed5cc3de23cc445e517b49f3a1168f49e2fcc2541e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17664 16816 bytes

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