Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f46d22fad07513…

MALICIOUS

PDF

68.6 KB Created: 2021-03-02 02:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1b8419b011a05b2ac2b573c9c3a8d7bb SHA-1: 4ab7910418c27c1bb9ef4ef98325e1c89142112d SHA-256: d9f46d22fad07513e4cbccbb646ecfc915e2265d72325fedee0d602b038d9f56
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that mimics a search result for educational content, likely a lure to trick users into visiting a malicious site. The presence of PDF-specific heuristics and embedded URLs suggests an attempt to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/wix?keyword=holt+california+mathematics+course+2+pre-algebra+answer+key PDF link annotation
    • http://miribut.mywebcommunity.org/no_fear_shakespeare_macbeth_act_2_scene_2.pdfIn PDF document text
    • http://mowisadewojapu.22web.org/chargers_broncos_injury_report.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/why_does_my_mains_powered_smoke_alarm_keep_beeping.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491671/normal_5fdb7aecd27c0.pdfIn PDF document text
    • http://bigonetudukori.iblogger.org/employee_onboarding_ppt_template.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/edexcel_a_level_chemistry_paper_2_2018_mark_scheme.pdfIn PDF document text
    • http://dijepitezuk.22web.org/28912022848.pdfIn PDF document text
    • http://shopmzm.site/what_happens_in_chapter_6_of_the_givertingy.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/xifabilejilab/asterisk_server_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/durikufuzunawovarax.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/kesapegopiw.pdfIn PDF document text
    • http://puguvapalovuzub.rf.gd/53622718425.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/what_is_the_order_of_twilight_books.pdfIn PDF document text
    • http://bodotekufuw.rf.gd/ziposowa.pdfIn PDF document text
    • http://bexalawisilinot.epizy.com/48160153855.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/99024810405.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_off0000cc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3F 5952 bytes
SHA-256: 5bbc62df1b433918f3409063f484594848c720eaf70208cb61001223b92b91bb
font_01_sfnt_off0000e07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07E 10144 bytes
SHA-256: 4718d238d5da7c1c2a1b8fa95d0d994b58fec8eea6f2a3b8e4fd06a6b4f129b3

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