Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda0b17dfbca2c8d…

MALICIOUS

PDF

81.4 KB Created: 2021-03-30 08:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731ff1cb0f5aa6574dc147e397c53102 SHA-1: 720ead10a8079fa00ae105dfcce90fd555c779a4 SHA-256: bda0b17dfbca2c8d8419c13e1b044d20a363feb4137de23de20ce1460fe60c4b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, appears to reference an annual report, suggesting a pretext for the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/123?utm_term=moneysupermarket+group+annual+report
    • https://cdn.sqhk.co/letareximo/haGaGlb/lezomarunetiroj.pdf
    • https://cdn.sqhk.co/gaduwifawide/cbja3tV/can_you_escape_the_room_level_37.pdf
    • https://cdn.sqhk.co/gisusisabez/fiaehcu/vedenotot.pdf
    • http://wafixevewitope.mypressonline.com/damugamufimasapuwadawijij.pdf
    • https://cdn.sqhk.co/xenojepezere/aicgorD/nijorojeragegoma.pdf
    • https://cdn.sqhk.co/naludibeg/jgijhak/golizofilunawamitetite.pdf
    • https://cdn.sqhk.co/nozelenid/Jjhjfjj/baked_pork_chop_recipes_with_applesauce.pdf
    • https://cdn.sqhk.co/kewukapugino/WeNjdix/weather_app_symbols_explained.pdf
    • https://cdn.sqhk.co/gafokoru/Bijxiig/my_colony_tech_tree.pdf
    • https://cdn.sqhk.co/ruxukulalodi/jdgf0t5/73484448070.pdf
    • https://cdn.sqhk.co/lagidexetin/h4TsuJg/30001218066.pdf
    • https://cdn.sqhk.co/pijajawopoji/biggfYj/momezikugeluzewux.pdf
    • https://cdn.sqhk.co/jabisopomuxo/b1RHjg4/33167556997.pdf
    • https://cdn.sqhk.co/buxifuludo/ergghbO/kiraxe.pdf
    • https://cdn.sqhk.co/wubunepan/inhcsdX/red_ball_2_walkthrough.pdf
    • http://rivokalodusi.sportsontheweb.net/characteristics_of_useful_accounting_information.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/90895afc-1c89-41ca-9cac-7dffc6e6eae4/90157103087.pdf
    • https://s3.amazonaws.com/jivala/xubuvubejarusogogajoxenaw.pdf
    • https://s3.amazonaws.com/ritoma/egocentrism_in_psychology.pdf
    • http://zekezixurul.onlinewebshop.net/kaxanaxojuvegakevudatizas.pdf
    • https://s3.amazonaws.com/baxunaf/30340629070.pdf
    • https://uploads.strikinglycdn.com/files/1cb3c674-6d63-44c9-b861-3cb2f4d75ab5/judobevenakiwadeb.pdf
    • https://s3.amazonaws.com/boduxatavepe/jirajunovipenosilekomi.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_off0000fda4.bin
1a77d736954f7a5aad5c3624236738c01ff89589399ac73fd518813e8e9d0037
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA4 5308 bytes
font_01_sfnt_off00010fb8.bin
80eee3a76b49f830e5782831e745c491fb0702def8c44a0a9789eeaf3eba3dbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB8 11540 bytes