Malicious PDF — malware analysis report

Static analysis result for SHA-256 5841483b54d9b21f…

MALICIOUS

PDF

257.6 KB Created: 2021-03-28 17:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bf7b9aead9747f7baa89a71fafc25ee6 SHA-1: 3fedb237c752aa8f86ac0de8f69d920bb6630ecc SHA-256: 5841483b54d9b21f5b63894079199a9891244795b073de45b91a8dab1d353f9b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9346

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/strik?utm_term=database+management+system+book+pdf+for+bsc+computer+science PDF link annotation
    • https://cdn.sqhk.co/zekuxemelop/1eVCU3d/color_changing_wallpaper_for_walls.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/kijji3t/retroarch_linux_core_updater.pdfIn PDF document text
    • http://fagilef.getenjoyment.net/barium_meal_study.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/vertical_circular_motion.pdfIn PDF document text
    • http://lubevos.scienceontheweb.net/amitabha_sutra_english.pdfIn PDF document text
    • http://baltika-trans.ru/69927613636ed6ra.pdfIn PDF document text
    • http://detonic-ordina.website/degogufofoy5dpv.pdfIn PDF document text
    • http://pisodanijuke.iblogger.org/today_weather_report_madhupur_deoghar_jharkhand.pdfIn PDF document text
    • http://laxana.ru/devasubofw0nmt.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zedorufusoli.rf.gd/4._4_aquatic_ecosystems_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/neralizuxuzipuwedi.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/code_128_barcode_font_crystal_reports.pdfIn PDF document text
    • http://polilofu.onlinewebshop.net/e_marketing_textbook.pdfIn PDF document text
    • http://torejejowomu.myartsonline.com/introduction_to_ergonomics_book.pdfIn PDF document text
    • http://robavumu.rf.gd/life_fitness_bike.pdfIn PDF document text
    • http://mafevela.rf.gd/dujisosejajevob.pdfIn PDF document text
    • http://wekidezeze.epizy.com/jelusoxogivera.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37CE7 5448 bytes
SHA-256: cdaf4b6453de3f0969720dfd700374e9a42c972c85406ca463d8cf934e6facf9
font_01_sfnt_off00038e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38E57 5628 bytes
SHA-256: 4af9464326e4fbe9cc973b2347a4b3232d15921b8357194cd9fb5c15faf8779d
font_02_sfnt_off0003a164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A164 14248 bytes
SHA-256: 1b2c7e6cb308351a2e8c333333c377d716fad10f223b43be155ca5671eb8b6ba
font_03_sfnt_off0003d199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D199 16484 bytes
SHA-256: 6d554f28f068d4854e66bcbc9acfdceec495b1431f8a6342759769de809c3fcf
font_04_sfnt_off0003e821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E821 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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