Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedca4f8c6a129b6…

MALICIOUS

PDF

74.5 KB Created: 2021-02-28 07:16:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 3add01923f4d40806dce44345dc873dd SHA-1: ad1a0ad03768adf68ac7fdadc6ffe28e0415d45a SHA-256: fedca4f8c6a129b603024083bbe1440b7a0c735055a3e8515ace9e984a71b490
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, masquerading as a guide for creating branching tree diagrams. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation.

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://resalured.ru/aws?utm_term=how+to+make+a+branching+tree+diagram PDF link annotation
    • https://cdn.sqhk.co/mefomixut/GgghiOH/luzobovosujiw.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/jjFz3Kf/my_boy_emulator_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/ijiaNjg/ariana_grande_wrote_ice_cream_blackpink.pdfIn PDF document text
    • http://tojagetuwiger.iblogger.org/razibixo.pdfIn PDF document text
    • https://cdn.sqhk.co/pavupaken/Oie9Dvl/xbox_gaming_controller_for_phone.pdfIn PDF document text
    • http://kuzegajozux.iblogger.org/41986298957.pdfIn PDF document text
    • http://razixir.22web.org/noxudepelulat.pdfIn PDF document text
    • http://jetavimazi.22web.org/ahmednagar_fort_information_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/UcHhigQ/aliens_drive_me_crazy_game_hack_version_download.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/tesapibebujep/kadesuvifixukutifuzape.pdfIn PDF document text
    • http://sodividupoz.epizy.com/what_are_the_different_phases_of_software_development_life_cycle_sdlc.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/18168846925.pdfIn PDF document text
    • http://xugadizedema.rf.gd/the_drowned_and_the_saved_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/22810362438.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/chitrali_audio_songs.pdfIn PDF document text
    • http://wufalejopasedor.epizy.com/fuvid.pdfIn PDF document text
    • http://leludopovofa.rf.gd/hematology_short_notes.pdfIn PDF document text
    • http://zewomasajeguzud.epizy.com/psalm_91_niv_bible_study_tools.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_off0000e675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE675 5400 bytes
SHA-256: 3103f340a4cc300918b6f2ad974c7d33c2b64dc34329da14d710848a49cf47d9
font_01_sfnt_off0000f8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B4 10616 bytes
SHA-256: 6cc6b0bf17b55e5a2052104dc6d899e85ec6c67039c3878e12ab2f43a7ad64bd

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