Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc1520a8c940731…

MALICIOUS

PDF

80.7 KB Created: 2020-12-27 19:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8831c0a2136ad9f18e154bb2bd472a1f SHA-1: d0cee24fe598e7aa32bd04d997219e43b6677c47 SHA-256: abc1520a8c9407310ab95db7e7cc40c100ab7429570cc679a529e20ba06d7259
104 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. It uses an urgency-based lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffnew.ru/strik?utm_term=cold+patch+tonnage+calculator PDF link annotation
    • https://cdn.sqhk.co/zupodejadofe/wjchjiH/48137739695.pdfIn PDF document text
    • https://cdn.sqhk.co/zawatilirip/hghhibO/91497491791.pdfIn PDF document text
    • https://cdn.sqhk.co/podadoxafa/iaifXji/3d_crystal_puzzle_castle_directions.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/zPAqCjc/monkey_king_demon_battle_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/ejdjajh/spectrobes_origins_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/rawegili/shbjjT3/74542236959.pdfIn PDF document text
    • https://cdn.sqhk.co/sofaxuleruri/ZjiujdB/study_skills_for_middle_school_activities.pdfIn PDF document text
    • https://cdn.sqhk.co/renerolodepu/irgchg2/horizon_flight_simulator_2019_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kolazapikib/4biijd3/create_a_grocery_list_online_with_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/moradivovep/eYAugfy/jofomipukexuluxan.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/zarusegibitumet/90376927537.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/deadpool_kills_the_marvel_universe_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/android_ndk_folder_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/evidence_based_practice_guidelines_for_sepsis.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/rubuxivavonojujug.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9B 5060 bytes
SHA-256: 8a0c1d84f0d3b9f1e4a901f8a3e1abf513546d7435720f14d05af44c854d281e
font_01_sfnt_off0000fbc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC5 10648 bytes
SHA-256: e45d9d0a3412ae86ace7acef3f82e3fe193e90a365da24c701be9d6721e14ba2
font_02_sfnt_off00012043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12043 16304 bytes
SHA-256: 36298d9b42482ef505b651e9545134b76438dad7e59d1f17d96a2cc3761d4b83

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