Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1453e804bfa5f33…

MALICIOUS

PDF

73.3 KB Created: 2021-02-21 23:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0d9c90ecb095e2bfe1552673a29dbfa0 SHA-1: 52fcca7feab36562f532b10c94b406627386c851 SHA-256: b1453e804bfa5f335e6bb494b4e47a117bbd3fcb4c002bf5eea5a8c751143694
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Emotional intelligence book 2.0 summary' and embeds a URL pointing to a suspicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of external URIs and the overall detection suggest a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=emotional+intelligence+book+2.0+summary PDF link annotation
    • http://natbeach.space/berghaus_air_porch_groundsheetxo7kw.pdfIn PDF document text
    • http://jerijoba.iblogger.org/informant_reports_and_behavioural_assessments.pdfIn PDF document text
    • http://kihepc.xyz/the_united_states_constitution_scavenger_hunt_answer_key_history_with_mr.emycup.pdfIn PDF document text
    • http://vbruti.site/7007338827746lju.pdfIn PDF document text
    • http://mazafaka69pussy.online/manual_de_arduino_mega_2560_en_espaolla8zo.pdfIn PDF document text
    • http://ellmax-site.xyz/fegav0tbyv.pdfIn PDF document text
    • http://trafikcezaodebayisi.com/materi_akuntansi_keuangan_lanjutan_1krztd.pdfIn PDF document text
    • http://trenketo.buzz/25282206443fi8ql.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/g3jghe9/tudexuja.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/flgjUdv/54549550746.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/rojalexipokadaz/audible_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/fofonexexagarore.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/roxoxavo.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/toronto_housing_connections_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/basketball_stars_mod_apk_revdl.pdfIn PDF document text
    • http://jibovofafef.epizy.com/97306396432.pdfIn PDF document text
    • http://xewipevi.rf.gd/3d_anatomy_software_free_for_android.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_off0000e1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F4 5688 bytes
SHA-256: 93a15820a0e7e181549e96bdb1d908edca7bdd63223b2bb6bd1343a57dba935e
font_01_sfnt_off0000f54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 10184 bytes
SHA-256: 3346f8e4582159c8413416ea83f7f0e12a4fb79b1875e6131311e5a3ee7e38db

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