Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b100c45c4dccf4a…

MALICIOUS

PDF

89.2 KB Created: 2021-02-25 22:13:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9f819ab28b5a3971aa44e131eb4f6033 SHA-1: 98e5f33dd72b0706a1323a9e96e12be864a2c168 SHA-256: 7b100c45c4dccf4a147111cc13aaf9823a5275b9dc90530f909aeae2d7fe7fb9
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=portugal+travel+guide+pdf+free PDF link annotation
    • http://malafasa.iblogger.org/understanding_eclipses_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/sovajepuxe/i0Q3dra/nunalekokusuvepidawilinib.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/jjNhjek/kilusejefefavolejo.pdfIn PDF document text
    • http://thrivewebs.com/free_marching_snare_drum_sheet_music306tf.pdfIn PDF document text
    • http://sosepojidoduxad.iblogger.org/cambridge_dictionary_arabic_apk.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/puroferogubix.pdfIn PDF document text
    • http://pokupka.space/33507186746bpsdj.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/Voggiht/raft_survival_multiplayer_simulator.pdfIn PDF document text
    • http://matras-24.ru/99510243917idnfl.pdfIn PDF document text
    • http://buylettersonline.com/what_can_i_eat_for_20_carbs_a_day8acg3.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/matogapibelifiv/gunupukejelubi.pdfIn PDF document text
    • http://rumudojipa.epizy.com/autodesk_2016_keygen_xforce.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/darisaz.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/35326066399.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/cost_accounting_a_managerial_emphasis_chapter_4_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/12151327349.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/87935164815.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/jikudafoseza.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_off00012210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12210 5092 bytes
SHA-256: b42ac923f2b429640902412e234673f60f9f636bfb93d0494d430415283ba383
font_01_sfnt_off0001337d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337D 10696 bytes
SHA-256: aa6de89df54e6b251427b89470610ca1e8fdf41b4180ee53b9b73a157b942e4c

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