Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c70442814d336c…

MALICIOUS

PDF

68.3 KB Created: 2021-02-28 17:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06b27ecf930b8f542ca3855a22b976b1 SHA-1: 3a3cb06c4eef0c574db16b76235b77e8e3f8d8fc SHA-256: 05c70442814d336c16497cebaa4cbc4fb487ad972e2e173c54c94d5ce0fd1491
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, masquerading as a search result. This indicates a phishing attempt to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file, suggesting it's part of a phishing campaign.

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://midufefew.ru/wix?keyword=vocabulary+workshop+level+c+unit+5+answers+synonyms
    • http://1-bog.ru/doomsday_last_shelter_guide7sbe5.pdf
    • http://sekejibugu.iblogger.org/how_to_use_nutribullet_rx.pdf
    • http://alsamcctv.com/can_i_use_my_adt_system_with_another_companypu6w1.pdf
    • http://nosinoski.shop/does_xbox_one_s_support_120hzfk8da.pdf
    • http://sunny-web.ru/550_paracord_projects_instructionsqbixs.pdf
    • http://itclick.info/adobe_reader_merge_onlinento99.pdf
    • http://topvideo.design/canon_movie_editing_softwarepxeam.pdf
    • http://generatorsale.ru/mevipik3wz8h.pdf
    • http://bigpleasure.ru/mefawokijasiel8wx.pdf
    • http://clubstore.info/70017006744ictj7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/feborobegibew/top_5_free_adventure_games_for_android.pdf
    • http://xuzetiseke.rf.gd/84410570634.pdf
    • https://s3.amazonaws.com/fajetufekejo/planning_cours_cercles_de_la_forme_nation.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_off0000cecf.bin
1709d2e7cc742cc73e4aee140b70a4e9659ce65013c408772087c3a3b73bab83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCECF 5720 bytes
font_01_sfnt_off0000e23a.bin
c9767f4584a823b4b114f60758e354c11aa42f87620c1af3832d9e938de8f87e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE23A 9956 bytes

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