Malicious PDF — malware analysis report

Static analysis result for SHA-256 b154afeccafd4905…

MALICIOUS

PDF

70.3 KB Created: 2021-02-25 09:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d4f9d26bbf0b6d0988551a304c590c0f SHA-1: 797e0b3f79900be0b9224f4d5678396b0a5616e0 SHA-256: b154afeccafd4905160bf232d245a56fbad7cdfe2e344f8fb811812e7a96fa09
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://leonvi.ru/aws?utm_term=i+pilot+vs+i+pilot+link', which is likely the lure. The document body, though heavily obfuscated, contains text fragments that appear to be related to the URI, suggesting an attempt to trick the user into visiting the malicious link.

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://leonvi.ru/aws?utm_term=i+pilot+vs+i+pilot+link PDF link annotation
    • https://cdn.sqhk.co/jovakuki/iifibgg/car_stunts_3d_free_extreme_city_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/gjhggez/85964463684.pdfIn PDF document text
    • http://xeeewq.xyz/fofuje14766.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/ig5Uhgy/weather_near_me_radar.pdfIn PDF document text
    • http://roburupagosode.iblogger.org/business_case_template_word.pdfIn PDF document text
    • http://mikrotikwizard.com/delta_electronics_inc_annual_report_2017606w5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pifimat.epizy.com/charlie_puth_marvin_gaye_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/kofefiwavufarorexuvefa.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/mehmood_ul_hassan_ashrafi_naats_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/exercice_nombre_rationnel_4me.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/gnossiennes_erik_satie_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/nelson_chemistry_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/libro_de_dinosaurios_para_colorear_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/bangor_city_forest_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/25574060297.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 4568 bytes
SHA-256: 00f90a43f58143747a3765ebb02e4e2161ed82b97a1f1a22d140213c78161a73
font_01_sfnt_off0000e85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85E 10612 bytes
SHA-256: 143ec1f48057d51b92115897c188bc3a9dcbf6d9b470df0bf9a9c3a6ebe53dbf

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