Malicious PDF — malware analysis report

Static analysis result for SHA-256 4693dd249f437cd6…

MALICIOUS

PDF

81.3 KB Created: 2021-03-16 00:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 42886f3e3ce157f847dae3b6017df34e SHA-1: be9506f3b79612f26c922e2d41c06fd9138a58e4 SHA-256: 4693dd249f437cd6e546e897d715b6eed0e65520e50dddfb2427fb8b38f1ca3c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'nipisod.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'confetti cones template'. No scripts were extracted, but the presence of external URLs and the malware detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/123?utm_term=how+to+make+confetti+cones+template PDF link annotation
    • http://zebrait.fun/what_are_different_types_of_nursing0jbar.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/hjmgjoi/95916717061.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/kevKhbG/real_police_car_driving_v2_mod_apk.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/vuwepademuzisizadirori.pdfIn PDF document text
    • http://limecash.xyz/davosuvakowiri7vqm.pdfIn PDF document text
    • http://fruit-ita.fun/mexominuwufasukugikizptu4t.pdfIn PDF document text
    • http://freshka.fun/dyson_ball_animal_2_vacuum_cleaner_logo2eog2.pdfIn PDF document text
    • http://prolac.ru/louisville_cardinals_injury_report66e9w.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/araldite_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mogipegi/lyndonville_police_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/pioneer_avh-x2600bt_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/gattu_naresh_naa_songs_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/teduwuzivapezusikaf.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/tobap.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/norefunufamodinixijogi.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/zukunupimopuk.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/defending_jacob_ben_death.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/cookie_baking_sheet_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/ponunesenib.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/30061933022.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/64015264011.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF225 4968 bytes
SHA-256: a5f1c6fc937482ffc242a5f35aec1bf1aad1cbbf5c4fa541962069d782219af1
font_01_sfnt_off00010306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10306 11256 bytes
SHA-256: 509e36df688f742b3deb8445cffbe28d9b0150de0e2bcb31bdd5c946d8ad6e94
font_02_sfnt_off0001290f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1290F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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