Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c2ee980ff10b20a…

MALICIOUS

PDF

71.4 KB Created: 2021-03-08 15:42:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db2a4de2c4ba02914ae273db17bdfcbc SHA-1: 191005e4d17ae243fde9a61eb731361d667879ce SHA-256: 3c2ee980ff10b20a435f53bfc595f959b449733a84cf065322758b2abd3c3bca
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest it's designed to trick users into downloading further malicious content.

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://xezojetit.ru/123?utm_term=certified+accounting+technician+reviewer+pdf
    • http://sodaapp.pro/pubofodewusaxa08tk6.pdf
    • http://wewogokuwidu.mywebcommunity.org/which_is_the_best_mous_case.pdf
    • http://krokoboko6.xyz/rulamedisusokemijqggy7.pdf
    • https://cdn.sqhk.co/kixobaza/ilifgcu/12354765733.pdf
    • https://cdn.sqhk.co/romumoxoleno/gjszjfl/dr_driving_2_game_online_play_plonga.pdf
    • https://cdn.sqhk.co/puxezuxivas/giIUe5d/26904476525.pdf
    • http://dufigep.scienceontheweb.net/luzesazusanojodow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nivuzujanux.myartsonline.com/16421027289.pdf
    • https://uploads.strikinglycdn.com/files/6d789231-5e26-43e1-a833-cd08cd30d62a/felufobugisow.pdf
    • https://s3.amazonaws.com/kodipopujufipig/auto_insurance_cancellation_letter_template.pdf
    • https://s3.amazonaws.com/jenisozazewubo/vocabulary_quiz_template.pdf
    • https://s3.amazonaws.com/wovugi/terukunupika.pdf
    • http://judiserod.onlinewebshop.net/10727233733.pdf
    • https://uploads.strikinglycdn.com/files/ab9c99a9-bc56-4927-89ba-e306204b443a/vavoposaxidip.pdf
    • https://uploads.strikinglycdn.com/files/3e335278-b379-4cb4-a220-27c5bf9089aa/how_did_the_cold_war_impact_latin_america.pdf
    • https://s3.amazonaws.com/zetubakuz/icao_annexes_1_to_19.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_off0000d767.bin
e2b670ad9c51e75bce8b6e579637a72e0103980eb5caff08cfa9a163ca2df7c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD767 5264 bytes
font_01_sfnt_off0000e961.bin
4df4418bf52f211b47bd86413f582f1bd8d2c521c703803597d866a915d400e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE961 11532 bytes

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