Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa06603fcd64c1e…

MALICIOUS

PDF

69.5 KB Created: 2021-05-10 01:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7a504e8de194dd1830430a1e8622081 SHA-1: d87ca313b9f946c14b6747a15fafd215956f41bf SHA-256: 9fa06603fcd64c1e437a59c2a957249513a3dd33fe3e251715aeb60016b02095
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=how+to+do+maths+calculations+faster
    • https://kusebavizekofuk.weebly.com/uploads/1/3/4/0/134098677/5f52066985e76ce.pdf
    • https://zapirugitoz.weebly.com/uploads/1/3/4/5/134508168/fbe7fb7a.pdf
    • https://sezijaxafiv.weebly.com/uploads/1/3/1/6/131637080/5765484.pdf
    • https://cdn.sqhk.co/wadupaxi/ggX7ugc/rajinagoguwigelesex.pdf
    • https://cdn.sqhk.co/runetonorox/JrYhcDd/descargar_google_chrome_android_apk_ultima_version.pdf
    • https://cdn.sqhk.co/gutifusuf/bgijaha/sw_sound_worksheet.pdf
    • https://cdn.sqhk.co/livixugakuf/RKbgegf/zkteco_attendance_management_software_free.pdf
    • http://joteruzawareba.iblogger.org/best_antenna_for_yaesu_vx-7r.pdf
    • http://nevodoma.iblogger.org/koxozaxolikaxadivawev.pdf
    • http://tegogigagozij.iblogger.org/esc_guidelines_heart_failure_2008.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/04468685-dc5b-4848-b1ce-25f747ed6633/how_to_open_a_penny_stock_trading_account.pdf
    • https://uploads.strikinglycdn.com/files/aa14930f-d8bf-42e5-b642-42cedb3628d6/rabozapovuzokitowo.pdf
    • https://s3.amazonaws.com/xufaxoferugod/pifumitemutasoforux.pdf
    • https://s3.amazonaws.com/muxegeza/korg_d1600_mkii_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/71eab24b-3a0d-41b7-95f8-9f66122df737/vixifebofevuzosirewibovo.pdf
    • http://demunoj.epizy.com/fazolijusagidala.pdf
    • https://uploads.strikinglycdn.com/files/29c788ac-405e-499a-8352-33b3b3a1585e/54724642445.pdf
    • http://delifas.epizy.com/xupetazuki.pdf
    • http://roxazapamakitij.rf.gd/jifofuxoleki.pdf
    • http://josesawi.epizy.com/calculus_of_variations_and_partial_differential_equations.pdf
    • https://s3.amazonaws.com/zexozavo/can_you_play_flight_sim_2020_on_xbox_one.pdf
    • http://lowazuxakosilal.epizy.com/christmas_carols_song_sheets.pdf
    • https://uploads.strikinglycdn.com/files/0e24f299-6dee-4413-b303-6e2c1c681db1/53198488275.pdf
    • https://s3.amazonaws.com/kaxukok/dreambox_control_center_2._9.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_off0000d2aa.bin
cdbe7eba0e742af0690893d30fcc1cfb5b2b1e585a4e84773e0ce33892091d8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AA 5316 bytes
font_01_sfnt_off0000e49c.bin
39fe31721d79bb93779605c79dfc519364a515f3d21b5d49c5470465f7a121bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE49C 10460 bytes

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