Malicious PDF — malware analysis report

Static analysis result for SHA-256 5951dd41ce208b63…

MALICIOUS

PDF

79.7 KB Created: 2021-03-12 10:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6719391939b0a84507675a71631fa5f3 SHA-1: 27d94a0eb32485612ec5f24246295d8a5bc7129d SHA-256: 5951dd41ce208b63ed0d8d241e605cc2bddf01e8722b5ab9ce30d4372ddb138c
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that leads to a site offering 'level 2 food safety course answers', a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/123?utm_term=level+2+food+safety+course+answers
    • https://cdn.sqhk.co/dejuxafe/eihAvjP/2_player_split_screen_zombie_games_xbox_one.pdf
    • https://static.s123-cdn-static.com/uploads/4473056/normal_5feafa50aa0b1.pdf
    • https://cdn.sqhk.co/lugizumevemu/fhhCu9E/sakura_blade_music.pdf
    • http://zeboxagekej.sportsontheweb.net/traductor_de_espaol_a_ingles_en_pasado_simple.pdf
    • https://cdn.sqhk.co/gidulikegel/axibiag/motor_vehicle_service_notification.pdf
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/fotij-jotilaku.pdf
    • http://mowefopovog.mywebcommunity.org/pebunasukewumiponas.pdf
    • http://jalazekesofijot.medianewsonline.com/honeywell_hcm-350_humidifier_for_sale.pdf
    • https://cdn.sqhk.co/zeputefilu/ccKRhf2/stickman_warriors_fight_5_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4413454/normal_60058d0cb5a44.pdf
    • https://static.s123-cdn-static.com/uploads/4467287/normal_5fcf3d5952d36.pdf
    • https://static.s123-cdn-static.com/uploads/4455375/normal_5fee752a1c913.pdf
    • https://deriwofapavuz.weebly.com/uploads/1/3/4/3/134311795/17d2d150f18c5.pdf
    • https://cdn-cms.f-static.net/uploads/4420747/normal_60316691a6bf2.pdf
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/65411d4bc.pdf
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/361ec44898.pdf
    • https://static.s123-cdn-static.com/uploads/4484363/normal_5fd050ec833e9.pdf
    • http://vazawujuzu.sportsontheweb.net/bosch_exxcel_express_dishwasher_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4366004/normal_5ff4c0c770e27.pdf
    • http://jedilinosur.mywebcommunity.org/6456356509.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://naburonip.myartsonline.com/11411184485.pdf
    • http://sarutufasiko.atwebpages.com/figurative_language_in_pop_culture_worksheet.pdf
    • https://medlineplus.gov/foodsafety.html
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec7c.bin
a808d18298d191e7bbfe4311bdd4f396827719234596ae536c3f2a6503d1f1dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7C 5176 bytes
font_01_sfnt_off0000fe44.bin
326078f801bdbb1201355c2f011e9fcd49d89dbe7571376c0346d132d5507362		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE44 10840 bytes
font_02_sfnt_off00012315.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12315 4324 bytes

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