Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eea7cae1cc4366f…

MALICIOUS

PDF

76.9 KB Created: 2021-03-20 06:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffdfa71bdcde53fadb0aaca5527e05a4 SHA-1: b937d8c7802021bd10b0fd81d7a904046e59caf6 SHA-256: 5eea7cae1cc4366f2af19672d60ae0ea83ef612ee51a5cbe3bf61d97d922055d
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. It contains an embedded URI pointing to 'resalured.ru', which is likely a malicious domain used to host a secondary payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'Bonjour service for windows 7 64', indicating a social engineering attempt to trick users into visiting the malicious URL.

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://resalured.ru/123?utm_term=bonjour+service+for+windows+7+64
    • https://cdn-cms.f-static.net/uploads/4367271/normal_602050c775f2a.pdf
    • http://fuzuwozozat.mypressonline.com/poriro.pdf
    • http://xiruzox.mygamesonline.org/47997707377.pdf
    • https://cdn-cms.f-static.net/uploads/4416490/normal_602c251f78c8f.pdf
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5fe7839dbfd82.pdf
    • https://cdn-cms.f-static.net/uploads/4464852/normal_6014be56983f9.pdf
    • https://cdn-cms.f-static.net/uploads/4468289/normal_60111429c8a12.pdf
    • https://static.s123-cdn-static.com/uploads/4485930/normal_5ff02c327bb28.pdf
    • http://luxasireku.sportsontheweb.net/cause_and_effect_essay_about_smoking.pdf
    • http://lebuvowune.getenjoyment.net/are_all_witcher_books_good.pdf
    • http://xazixovabifin.medianewsonline.com/usa_state_abbreviation_list.pdf
    • http://rupaduwovuw.getenjoyment.net/62664765262.pdf
    • http://xogavuw.medianewsonline.com/biology_cape_syllabus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4ee40a04-eb47-4100-a7cd-8d7f6355fd9f/89138097312.pdf
    • http://wovibojo.onlinewebshop.net/anguttara_nikaya_english_translation.pdf
    • http://vorisenunajix.myartsonline.com/48604688413.pdf
    • https://uploads.strikinglycdn.com/files/89288c3f-6720-431f-8fb1-de3b454e8d34/objetivo_del_presupuesto_de_inversiones_capitalizables.pdf
    • https://uploads.strikinglycdn.com/files/3680a06d-7545-47ba-b692-35962b31909c/bejidurelabemiduj.pdf
    • https://uploads.strikinglycdn.com/files/4253351d-4ad6-49d9-bdb0-57789ade82dd/pilibedazewomaxa.pdf
    • http://wepogevadapafa.atwebpages.com/consulta_de_procesos_judiciales_rama_judicial_de_colombia_por_cedula.pdf
    • https://uploads.strikinglycdn.com/files/8e2a5c53-d7d5-409f-b11d-135582fd0f7e/taco_bell_shredded_chicken_burrito_nutrition_info.pdf
    • http://xomapagovujux.atwebpages.com/suzogetilox.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_off0000ef3f.bin
57c1b199c078c52783caf2db65da616616c12d238567fd055f033d3712d75d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3F 5372 bytes
font_01_sfnt_off000101c4.bin
26b399b8d89bcdde110dd8eb36bd8e72bb370e504528663fe8c9164a7a643ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101C4 10612 bytes

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