Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b63b6b1bc2ff25b…

MALICIOUS

PDF

79.6 KB Created: 2021-03-14 13:28:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e9eb7106ee01fb88b3b3dc54fadf55 SHA-1: 4ed9ea81712ebbb254307f47a3c9f326bf799b6b SHA-256: 5b63b6b1bc2ff25b913f9dc73cf6ff0180716fb49a755a3c1feb56407cac5f52
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/wix?keyword=packet+sniffing+and+spoofing+seed+lab
    • https://cdn-cms.f-static.net/uploads/4486197/normal_602bfc3f97e1a.pdf
    • https://cdn.sqhk.co/denepepunuja/rfifQjg/dead_trigger_2_1._5_3_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5ff909eb6149c.pdf
    • http://wirobigi.medianewsonline.com/inverse_trig_functions_identities.pdf
    • http://zanexipizuzog.iblogger.org/jikitamemusu.pdf
    • http://zobotalemogi.sportsontheweb.net/89627357705.pdf
    • https://cdn-cms.f-static.net/uploads/4367290/normal_603e5c646609b.pdf
    • https://static.s123-cdn-static.com/uploads/4375093/normal_600344960bbb1.pdf
    • http://detaxinema.22web.org/altura_68_inch_ceiling_fan_manual.pdf
    • http://kedugobepuged.mywebcommunity.org/o_evangelho_maltrapilho_brennan_manning.pdf
    • http://renijulemigato.iblogger.org/top_multiplayer_chess_apps_android.pdf
    • https://static.s123-cdn-static.com/uploads/4485299/normal_5ff2b11d7aeb0.pdf
    • https://cdn.sqhk.co/vemunaxudug/gY2ifVI/total_war_saga_troy_blood_and_glory.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://resifidivef.epizy.com/work_breakdown_structure_template_powerpoint.pdf
    • http://bojonovaja.rf.gd/wojem.pdf
    • https://s3.amazonaws.com/vonusirukete/24237032826.pdf
    • http://pipiwilevo.rf.gd/iready_book_answer_key.pdf
    • https://s3.amazonaws.com/nuselufuzo/facebook_access_token_null_android.pdf
    • http://lamupilabixekuw.epizy.com/android_camera_vs_iphone_x.pdf
    • http://zawipikeg.rf.gd/adobe_acrobat_reader_software_download.pdf
    • http://menumizumiwasij.rf.gd/sesimekevuzuz.pdf
    • http://jonesojawu.myartsonline.com/champions_league_anthem_sheet_music.pdf
    • http://kodugexibitomo.rf.gd/vox_ac15_hw_reverb.pdf
    • https://s3.amazonaws.com/tobaziw/99210936840.pdf
    • http://xuvekixofeku.onlinewebshop.net/24542280850.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_off0000f8e7.bin
5676c8e0ea9eaf94a10394a8fe7159c4b8fb185d4cf389a6bc48d973a88546ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E7 5432 bytes
font_01_sfnt_off00010b78.bin
0098564832599fde83da5caee7108a2bd7d45409c8d785de59e8b0c769ec3550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B78 10920 bytes

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