Malicious PDF — malware analysis report

Static analysis result for SHA-256 587b3b6199409ef6…

MALICIOUS

PDF

124.2 KB Created: 2021-02-16 08:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7cb26019d26afff1a15079214bf7f356 SHA-1: ffbbc8af986bc93ba00cc6ce4c524c58face0a1b SHA-256: 587b3b6199409ef618241c18f9a5d4cf403a6a4ddffbfd4220a1b6c5e29ed8e1
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be related to hardware troubleshooting, likely serving as a lure to disguise the malicious intent. No scripts were extracted, but the presence of external URIs indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/123?utm_term=hp+z820+won%2527t+power+on PDF link annotation
    • http://reduslim-europa.site/download_drag_battle_racing_mod_apk_android_19fjj4.pdfIn PDF document text
    • http://neuroncraft.online/hollow_earth_expedition_rpg_reviewl41yh.pdfIn PDF document text
    • http://universe1.space/13225376029y1rm5.pdfIn PDF document text
    • http://tuwuradozanava.iblogger.org/ba_1st_year_date_sheet_2019_sol.pdfIn PDF document text
    • http://options.expert/cookie_clicker_sugar_lump_guide094t7.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/gukanuwvsk5r.pdfIn PDF document text
    • http://shtampshop.ru/kadodepivibepakebepexiruj60ox.pdfIn PDF document text
    • http://triple-doska1.club/tixulosetadiz462iz.pdfIn PDF document text
    • http://torgservis-rus.ru/axon_7_mini_updatevuku9.pdfIn PDF document text
    • http://vas-rem.ru/zopirupowupexaf9f13.pdfIn PDF document text
    • http://beamorem.com/97776736036cbrlm.pdfIn PDF document text
    • http://itravelgr.com/derecho_penal_mexicano_gustavo_malo_camachov90rd.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/jipowumat/deselect_sheets_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/best_chatbot_platform_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/24598299683.pdfIn PDF document text
    • http://vabedagexod.rf.gd/morigubesujiwekopira.pdfIn PDF document text
    • http://foxadawimuwewar.epizy.com/vewezilajuxetegegepekuzen.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/apache_tomcat_8._0_for_eclipse.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_off0001a9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9EF 5000 bytes
SHA-256: 92a8171ac279f9b48daeb196c3fafa08423942da3d185d2872e2847c00832263
font_01_sfnt_off0001bb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB26 11960 bytes
SHA-256: f2a683dcd538cded990b2fe713dd1fe35adb0475e9f22a9bec8e3015606acbf0

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