Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a1c3cb97bef9cbf…

MALICIOUS

PDF

79.1 KB Created: 2021-03-17 23:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbde6d1de596e2afbf770f4a4c4bff08 SHA-1: 7a3b615328c708f10f30e42f9d8030fa19661629 SHA-256: 8a1c3cb97bef9cbf10c29d2501bf2e7d947211bed751f360bc483be4dd821bf4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. A critical heuristic indicates it's a PDF phishing trojan. The embedded URL `https://soxebez.ru/wix?keyword=the+flinch+julien+smith+amazon` is likely the primary lure, directing users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/wix?keyword=the+flinch+julien+smith+amazon
    • http://polikarmonolit.ru/epson_wf_7510_a3_color_multifunction_inkjet_printerq6tda.pdf
    • http://good-production18.site/sesuzulij0z7ci.pdf
    • https://cdn-cms.f-static.net/uploads/4476566/normal_6033ba861cb89.pdf
    • http://voirlo.xyz/string._format_c_alignmentw3nt0.pdf
    • http://liketime.online/rosojegimedfuq7i.pdf
    • http://bit7.top/gizomt6ccw.pdf
    • https://static.s123-cdn-static.com/uploads/4405641/normal_5ffd0026adea1.pdf
    • https://static.s123-cdn-static.com/uploads/4465003/normal_5fe3a02f70d78.pdf
    • https://static.s123-cdn-static.com/uploads/4374366/normal_60019b52cb6bb.pdf
    • http://leraxedosu.22web.org/business_strategy_frameworks.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wuwedilejom.myartsonline.com/19071425615.pdf
    • https://s3.amazonaws.com/dinigugaxej/merry_christmas_festival_information.pdf
    • http://famekemij.epizy.com/qualitative_research_proposal_example_psychology.pdf
    • https://s3.amazonaws.com/wuxupewu/katy_perry_roar_lyrics_video.pdf
    • http://kixixiwibatogit.epizy.com/98222102834.pdf
    • https://s3.amazonaws.com/bupaxomu/casanova_hotel_apkpure.pdf
    • https://s3.amazonaws.com/wizitifowubux/99713555453.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/what_is_the_moral_message_of_othello.pdf
    • http://zogadawedalifap.onlinewebshop.net/17043680206.pdf
    • https://s3.amazonaws.com/tetofamuxulil/63357676978.pdf
    • http://zekezixurul.onlinewebshop.net/cutting_edge_pre_intermediate_workbook_answers.pdf
    • http://zuwipipulu.epizy.com/bidutidogat.pdf
    • https://s3.amazonaws.com/jarawaxanivu/875524456.pdf
    • http://pulawev.epizy.com/56123399617.pdf
    • https://s3.amazonaws.com/zesixefe/30787021991.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_off0000faa7.bin
1b638688c939c2489be5d592dd42118be45549a57cffe1de35bf0cbfafa38627
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA7 5100 bytes
font_01_sfnt_off00010beb.bin
02ef96529d7afb472efbb13e3c26bc15d8e554298385a8a7037fd89e82869d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEB 10244 bytes