Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f2541e3958d516…

MALICIOUS

PDF

82.2 KB Created: 2021-03-14 07:20:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 262eee7637797bb2f7e0b885c14a8d28 SHA-1: d6ea4acf91b26b8f9a61bad3501caf701517de1f SHA-256: 73f2541e3958d516aea6493324e07b6d8de91e79ec5f8bea7c550bb68b1f8dab
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Kent ro price', aligning with a phishing attempt to solicit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=kent+ro+price
    • https://cdn-cms.f-static.net/uploads/4502245/normal_5fe88970722d7.pdf
    • https://cdn.sqhk.co/lexikegije/jYgeM1H/drag_and_drop_react_app.pdf
    • http://tetiviguxawik.getenjoyment.net/comptia_server_study_guide_free_download.pdf
    • https://cdn.sqhk.co/kipezipilojo/8Xiehfz/monaco_information_en_francais.pdf
    • http://forovasax.medianewsonline.com/what_gun_companies_does_beretta_own.pdf
    • http://callipakk2.site/soxum23hpe.pdf
    • http://domainlimax.xyz/2229538601720yp9.pdf
    • http://wunadimizurened.medianewsonline.com/tadilujam.pdf
    • http://golixudib.mypressonline.com/wikaj.pdf
    • https://cdn-cms.f-static.net/uploads/4446019/normal_6023d3e2f3fb0.pdf
    • http://mapotilij.mygamesonline.org/information_technology_internship_resume_examples.pdf
    • http://aycotoro0.xyz/icao_annex_17_amendment_14rwx9m.pdf
    • http://zekaxezixil.medianewsonline.com/movie_called_the_veil_2016.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xomufulikade.epizy.com/gaxepevubasakam.pdf
    • http://wusobagefege.epizy.com/practice_reading_solubility_curves_worksheet_answers.pdf
    • http://koxolavomuzo.myartsonline.com/bipuzuf.pdf
    • http://befojarariwowab.epizy.com/black_wrap_dress_formal.pdf
    • http://raxajabidadida.onlinewebshop.net/how_to_find_a_persons_cemetery_plot.pdf
    • http://ladisopezaxak.epizy.com/23865671206.pdf
    • http://vuxebezedigelun.onlinewebshop.net/lawujuwamowa.pdf
    • http://fepovapow.rf.gd/training_tracking_template_excel.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f190.bin
8387176fb181124b2c741f332cc0db876a5fcd77581f2cf4511c44d68e66c870
pdf-font-stream PDF embedded font (sfnt) at offset 0xF190 4476 bytes
font_01_sfnt_off000100e1.bin
b9ff191df3cb09839bf7e1ed9e017868a684bd2bd12a4cbd1e0cf30a47070b70
pdf-font-stream PDF embedded font (sfnt) at offset 0x100E1 10964 bytes
font_02_sfnt_off0001267b.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1267B 16164 bytes