Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f9f31c830f9dfa…

MALICIOUS

PDF

70.7 KB Created: 2021-03-12 01:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b8fab6a7e5e10b38650655186b4a842 SHA-1: dfb5b07fbc85ddbd64fc88ffba7cc0fb50bfa991 SHA-256: 79f9f31c830f9dfa8bcbbf5353e1289d6f22d57fe8040a2efd04edcb3a80bd5d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/strik', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=how+to+look+good+in+meetings
    • http://grafoanaliz.ru/american_society_aesthetic_plastic_surgery_annual_meeting9fmiw.pdf
    • https://cdn.sqhk.co/vekasurox/V1zlhby/hydraulic_calculations_for_fire_sprinkler_systems.pdf
    • http://lotto-investclub.com/20780365290e11xc.pdf
    • https://static.s123-cdn-static.com/uploads/4378843/normal_5fdd5db128232.pdf
    • http://christmas-gift.ru/all_business_letter_formatny00m.pdf
    • http://vsedlyatebya.xyz/nakipapidolixefafigulugirbqd7.pdf
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/wolumesof.pdf
    • https://rovenefewapug.weebly.com/uploads/1/3/0/7/130775308/2744252.pdf
    • https://cdn-cms.f-static.net/uploads/4373797/normal_60463351bd5a9.pdf
    • http://befigter.xyz/los_juegos_del_hambre_pelcula_completa_en_espaol_descargar_megay7lqx.pdf
    • http://smirno.life/miguel_serrano_nos_el_libro_de_la_resurrecciongob2l.pdf
    • https://cdn.sqhk.co/gefimiwotux/AhAShaD/real_razor_prank_apple.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/petuzutemixuvod/bacterias_que_conforman_la_flora_intestinal.pdf
    • https://s3.amazonaws.com/fadedosi/zemeporukewexutanugeguxo.pdf
    • https://s3.amazonaws.com/xojafemori/xadedudinegizokovabitib.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_off0000d89f.bin
cb6c721331d8c07e1d2b5844ab316c9b22e2518b4ef455249f8f8b5a86ff4899		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 4956 bytes
font_01_sfnt_off0000e97f.bin
bfbd61dd7472621d39e5bbbfa0306c67c05354fdf60b4c516a241578d832a2f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE97F 10748 bytes

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