Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fc119791e36599…

MALICIOUS

PDF

79.6 KB Created: 2021-05-18 08:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 223d5b980d18848869e542dd760aec15 SHA-1: d27ccba8f44e315913e87d7191dea601ec102ecc SHA-256: 15fc119791e3659922015519bd4f97a9273387e39898373996d826f014af8e66
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised as a search result, likely leads to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/strik?utm_term=vegan+foods+with+no+carbs
    • http://vusikudezewoteg.iblogger.org/articles_grammar.pdf
    • http://widalatipuna.22web.org/batman_arkham_city_lockdown_for_android.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xojarigaxajol.epizy.com/invoice_aging_report_sap_tcode.pdf
    • https://s3.amazonaws.com/jeponowon/4th_grade_science_worksheets_printable.pdf
    • https://uploads.strikinglycdn.com/files/2c0c0c55-e0cf-488d-8748-ee20fc9ced0b/is_cyberpunk_for_ps5.pdf
    • http://luledajosa.epizy.com/daridufukunu.pdf
    • http://waruzav.epizy.com/change_outlook_exchange_password_android.pdf
    • http://fetevatakipip.epizy.com/what_are_the_purposes_of_cockroaches.pdf
    • https://s3.amazonaws.com/palevijuj/artisteer_4_mobile_templates.pdf
    • https://uploads.strikinglycdn.com/files/bd90ab71-73e0-4f19-83e2-2acd86067ce6/elevator_pitch_ppt_templates.pdf
    • https://s3.amazonaws.com/godoremitiwuja/siwuweraruderiwejitiduxed.pdf
    • https://s3.amazonaws.com/votubukaxogilix/somewhere_over_the_rainbow_lyrics.pdf
    • http://simifumujabiguw.rf.gd/green_bay_schedule_2020.pdf
    • https://uploads.strikinglycdn.com/files/d93ec738-545c-40f6-9482-23a13a3d9c3a/wamagajajilegutunetiv.pdf
    • http://dofenepebasep.epizy.com/hyderabadi_biryani_recipe.pdf
    • https://s3.amazonaws.com/saxefi/78074573709.pdf
    • https://s3.amazonaws.com/vavejijitatofu/asus_rampage_v_extreme_bios_reset.pdf
    • http://jaxegowanav.rf.gd/25309083215.pdf
    • https://s3.amazonaws.com/kufazete/ligiduzivubezupi.pdf
    • http://juxuvirorut.epizy.com/11689520865.pdf
    • https://s3.amazonaws.com/zisulamisozoto/78979274061.pdf
    • https://s3.amazonaws.com/xozeb/2d_rpg_games_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/93864329-0840-499d-8910-8cecd9016871/rexujodiwilowivapozuvat.pdf
    • http://xodojes.epizy.com/xediwabov.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_off0000f9dd.bin
4514febc21db20bc20df31c824cf395e5f43f9ad16f1571caabf64dcf6433e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DD 5448 bytes
font_01_sfnt_off00010c7d.bin
f9db2a8ba3811c21afbe5f2b98e82e989cf9d0ff4a66300319683953f0da93ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7D 10836 bytes

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