Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a04abd280d1771a…

MALICIOUS

PDF

90.2 KB Created: 2021-01-27 04:09:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 045dfcbf32844f5dc3ae6045d7a1284c SHA-1: 73a5736cb0c51f69fe5b1426f8b151e0e9f6a64e SHA-256: 9a04abd280d1771aa5e8c98048f36c4ab17a3294d555a93643af643f7452b8e5
136 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The heuristic 'SE_MFA_LURE' strongly suggests the document is designed to trick users into revealing sensitive information like one-time codes or MFA approvals, consistent with credential phishing. An external URI pointing to 'bologen.ru' was also extracted.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://bologen.ru/123?utm_term=the+last+unicorn+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5ff59ffe777e8.pdfIn PDF document text
    • http://rezonansmusic.com/tumebufadabrcton.pdfIn PDF document text
    • http://exemplpusj.com/setusivivazenokadisebukuzx6ehb.pdfIn PDF document text
    • http://katermore.ru/46598481829052rn.pdfIn PDF document text
    • http://moitender.org/25789817980ufq17.pdfIn PDF document text
    • http://copyrightsupport-ig.com/rush_hour_4_trailert62js.pdfIn PDF document text
    • http://olivamebel.com/auction_sniper_reviews_2015o173r.pdfIn PDF document text
    • http://salea.site/493991274slzx9.pdfIn PDF document text
    • http://pornbustyvids.com/shatter_glass_weedronq5.pdfIn PDF document text
    • http://nibelv.xyz/vipibumos42m7f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/benuka/redbone_childish_gambino_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/bewuvaduputolevamosasotim.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/how_to_perform_ankle_brachial_index_test.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/adaptation_movie_dual_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/79085034091.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/certificate_programs_in_health_information_management.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/55749669917.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/medusikujebozivigixim.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/lavisifuviniv.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_off000123d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D4 5396 bytes
SHA-256: 336db970f9e3421229aee039d91f508194dc9c189bee6bb14e51fd2b9f0356fa
font_01_sfnt_off0001361f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1361F 10812 bytes
SHA-256: 0f56307b5f5e6a0a8567a10934c0ebb8db577f0700d3d68461753dafa5082bf2

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