Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9c394db975e35c…

MALICIOUS

PDF

80.0 KB Created: 2021-03-13 16:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4772f74159d93eca2d89795bc4fc92b SHA-1: 28d813e10b717244d58f22252d31982a78fe294c SHA-256: 5e9c394db975e35cf347d0e55fb48778084572571edd9a87cc1473bf0036fc61
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by both heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, contains text related to computer vision, likely serving as a lure. The presence of multiple embedded URLs suggests an attempt to redirect the user to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=what+do+you+mean+by+computer+vision
    • http://pefiworawodud.mypressonline.com/insinkerator_evolution_excel_warranty.pdf
    • http://rukozhop-guide.com/how_to_use_cricut_cartridgeswjnb9.pdf
    • http://ig-copyrighthelpcenter.com/29691016682lwbmq.pdf
    • http://solent.bar/appraisal_form_216bkz19.pdf
    • http://wuruvuguje.22web.org/rafejasoda.pdf
    • http://xorimomupajo.scienceontheweb.net/inteligencias_mltiples.pdf
    • http://bigwin-1xbet.fun/77514810553wbfh.pdf
    • http://kuwegatopu.iblogger.org/zilebax.pdf
    • http://prosucre.pro/cuisinart_dbm-8_burr_grindergrwk6.pdf
    • http://amsidgi.xyz/yamaha_moto_4_225_repair_manual_free_download8le7e.pdf
    • http://endi-itali.space/614211678557uexw.pdf
    • http://9gusevshop.space/zalimebixejusesutidc2b9q.pdf
    • http://ruguwafe.scienceontheweb.net/79182701552.pdf
    • http://strahauto.website/enable_adobe_flash_player_uc_browser_androidx34vo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://telusomabufa.onlinewebshop.net/89601956306.pdf
    • http://vitewunidamol.epizy.com/haar_wavelet_transform_matlab_code.pdf
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_85e0d875cb0d4ce8b06a154982fefa21.pdf?index=true
    • http://bewimovope.epizy.com/what_kind_of_battery_does_a_ford_focus_need.pdf
    • http://kubatejabudebuj.rf.gd/convert_file_in_word_document_for_free.pdf
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_7354dfbd106e496e82e853d2cc97e52a.pdf?index=true
    • http://daforewepon.epizy.com/ata_chapters_and_subchapters.pdf
    • http://bazibataz.epizy.com/worksheets_for_tenses_for_grade_8.pdf
    • http://zaxigadanu.rf.gd/arabiyah_linnasyiin.pdf
    • http://kugukokoner.myartsonline.com/negapisidawaviboxibib.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_off0000fb75.bin
638934ff07799e0d104cfa35208298b717731bd84125b5cff1910cf4ea5293bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB75 5596 bytes
font_01_sfnt_off00010e5e.bin
b767d000634d280559e00c272eea7c3727742c6a7739bab118fe81a62e50e567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5E 10788 bytes

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