Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a66230905dfc5e…

MALICIOUS

PDF

77.1 KB Created: 2021-02-27 07:22:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9978ed9231869faec55dbb8b7f74c38b SHA-1: 273781cab63d3cd0ad950acf32fb35f64b768760 SHA-256: 82a66230905dfc5e193d6713df71b5f509ed7d176b80475909934e8adfdacf4d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely used to host phishing content or a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a movie title, aiming to trick users into clicking the malicious link.

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://midufefew.ru/wix?keyword=they+come+knocking+imdb
    • https://cdn.sqhk.co/xolanikipiz/HWhhmje/huey_p_long_bridge_run_2019.pdf
    • http://fixmarker.fun/how_to_heal_plantar_fasciitis_youtubebodvd.pdf
    • https://cdn.sqhk.co/futevanu/ihdhf1n/tawilodoni.pdf
    • http://policyhelpcenter.com/cloud_9_full_movie_disney_channel_original_movieulf5l.pdf
    • http://lazujifoxupa.getenjoyment.net/graco_solano_crib_manual.pdf
    • https://cdn.sqhk.co/sunalikefazo/6Pgiic5/ringtones_top_100_download.pdf
    • http://orbitan.fun/niv_study_bible_zondervanp3n19.pdf
    • http://lemakomude.sportsontheweb.net/xibonupurajop.pdf
    • http://jaxagogilexet.sportsontheweb.net/45489750322.pdf
    • https://cdn.sqhk.co/tunuviju/hdHifjc/24006079764.pdf
    • http://wivaserana.mywebcommunity.org/html_css_editor_for_android.pdf
    • https://cdn.sqhk.co/moturalogupe/ihbTVjd/electrical_circuit_design_software_free.pdf
    • http://stav-games.ru/bifilenojngtq0.pdf
    • https://cdn.sqhk.co/jevamivuvugi/vGvibjg/music_with_lyrics_on_instagram.pdf
    • https://cdn.sqhk.co/lojumisebu/hdjfxgg/halloween_party_day_2019_amsterdam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vipaviveza.epizy.com/nosovuneburevivusawuve.pdf
    • http://jokosen.atwebpages.com/red_cards_in_joking_hazard.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_off0000f3f9.bin
36f938f3f307d5f7134ba12d8fe641a13df812773a45bf92ed193688bf084865		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 5092 bytes
font_01_sfnt_off00010536.bin
079774946e92d6cc99623f6f127843c73c53614a0f863d66e24dd0ce0aa80f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10536 9996 bytes

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