Malicious PDF — malware analysis report

Static analysis result for SHA-256 08fed603a3e51ea3…

MALICIOUS

PDF

75.7 KB Created: 2021-03-31 05:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f5d0820dfe99721bb3b39a0b4132c8 SHA-1: 28b612f5615ae44c6c7e61a94f919f7f152195eb SHA-256: 08fed603a3e51ea3b9b1461cd6575f2ee663f46857c9ba81bef84092c1ccd209
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. The embedded URL points to a domain associated with malicious activity, suggesting the document is used to redirect users to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure.

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/123?utm_term=cyber+security+web+templates
    • http://wafijazaxubot.iblogger.org/how_to_prevent_ice_in_freezer.pdf
    • http://1xbet-registrat.site/is_greek_gods_yogurt_healthyc1u1r.pdf
    • http://xapidomin.mywebcommunity.org/application_of_behaviorism_in_education.pdf
    • http://sipipewawezizuf.getenjoyment.net/how_to_remove_devices_from_ue_boom.pdf
    • http://mstmail.space/number_tracker_app_freeimtwh.pdf
    • http://kunewalijaxuna.getenjoyment.net/14967709154.pdf
    • http://autoupgrade.website/79384377495ng7oe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0c960992-cc39-4732-b62a-f2636a8c0967/52338308496.pdf
    • http://taguloxutenafol.myartsonline.com/aspectos_biologicos_y_psicologicos_de_la_sexualidad.pdf
    • http://lunukujuvazer.rf.gd/estudio_descriptivo_comparativo.pdf
    • https://s3.amazonaws.com/wizidimawag/dubai_expo_2020_projects_report.pdf
    • https://s3.amazonaws.com/napejaxosinages/whatsapp_plus_abo2sadam.pdf
    • https://uploads.strikinglycdn.com/files/39344e45-3042-4d7e-99b1-6fed82034c1e/samsung_tablet_wont_turn_on_after_charging.pdf
    • https://s3.amazonaws.com/jepavilutabilel/bmw_bike_hd_wallpaper_free.pdf
    • https://s3.amazonaws.com/zedudo/16990372050.pdf
    • https://uploads.strikinglycdn.com/files/275590e5-6e96-40de-a02f-77572660e6d9/how_to_set_timer_on_black_and_decker_12_cup_coffee_maker.pdf
    • https://uploads.strikinglycdn.com/files/987b6b4a-29f2-4190-b56a-ec8685018b28/the_republic_of_tea_double_green_matcha_tea.pdf
    • https://s3.amazonaws.com/ragejufa/kibiletote.pdf
    • http://gazisemodab.epizy.com/aula_inicial_de_violo.pdf
    • https://s3.amazonaws.com/tinivukedeta/help_movie_beatles.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_off0000e924.bin
fb585e43005901cc2259ccfa6cdf9f17fc7527d8f0a729d6b26bd27de6980c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE924 5316 bytes
font_01_sfnt_off0000fb36.bin
06c544a3d1f4f1f3ccd42f64ebbaf545190abf34a7a12f315cd6a8998100d11f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB36 11460 bytes