Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee25d5371b50464d…

MALICIOUS

PDF

87.3 KB Created: 2021-03-12 10:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae8f39b3256fe9533c39e9936b000096 SHA-1: bfe225b52dd5246e8044c2db85d803a7454725c9 SHA-256: ee25d5371b50464d9888e113a92723cd8ee1c7296dbf44330b152ae3a366868c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://jumiwimov.ru/strik?utm_term=what+is+a+topical+route+of+drug+administration, is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to drug administration, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=what+is+a+topical+route+of+drug+administration
    • https://cdn.sqhk.co/moserusoba/hdoggje/best_movie_quiz_questions_2020.pdf
    • https://cdn.sqhk.co/pixisuja/itjhjes/gutscheine_amazon_einlosen.pdf
    • https://cdn.sqhk.co/fifenije/cjdcgfy/element_td_dota_2_guide_2019.pdf
    • https://cdn-cms.f-static.net/uploads/4417531/normal_6022bb75a94ca.pdf
    • https://cdn-cms.f-static.net/uploads/4390330/normal_602981834002e.pdf
    • http://mufutekuson.getenjoyment.net/vazixulaxokovakamew.pdf
    • https://static.s123-cdn-static.com/uploads/4386095/normal_5fcbae27d9ed6.pdf
    • https://cdn.sqhk.co/kinerufi/piggiic/bezativofugasogevesa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gexibaw.rf.gd/what_is_forged_by_fire_about.pdf
    • http://mopawok.epizy.com/vurusom.pdf
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_bdae0a2945b2472182dad2f5dd226796.pdf?index=true
    • https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_e53f86fe6d4e432caed8d5679af0386e.pdf?index=true
    • http://koxolavomuzo.myartsonline.com/tuvurunexo.pdf
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_294700be55aa449784506abab67ad676.pdf?index=true
    • http://sogivuwe.onlinewebshop.net/3683410849.pdf
    • https://s3.amazonaws.com/galinikagopit/paul_ekman_emotions_revealed_francais.pdf
    • https://s3.amazonaws.com/dubiditiginowo/76585766754.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_off00011697.bin
9ca7fcaf9745dab3fdfd9fbd9b5c27d90179f2a39165dd8d1499c95d96d97077
pdf-font-stream PDF embedded font (sfnt) at offset 0x11697 5580 bytes
font_01_sfnt_off00012974.bin
cb1a58b645af6c64a6c000b06f5fb0b13dcebf2a6774b48847ed657dc215c36d
pdf-font-stream PDF embedded font (sfnt) at offset 0x12974 11456 bytes