Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2883d3d744520e1…

MALICIOUS

PDF

84.5 KB Created: 2021-05-17 10:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e87dd902b8637f71486cc73451354f11 SHA-1: 16b3ee40759cbeef48f90ea8cc0e0e56f6d6e7f0 SHA-256: d2883d3d744520e1f730c3e8381b671eb9adf0b47dd78dac7fa7a5060d174444
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a suspicious domain, likely intended 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, potentially for credential harvesting or further payload delivery.

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://druttle.ru/strik?utm_term=how+to+test+a+kidde+smoke+detector PDF link annotation
    • https://cdn.sqhk.co/xisofofumew/cGgc3D1/free_online_radio_stations_italy.pdfIn PDF document text
    • http://kafologegodudo.iblogger.org/mujegijiwogi.pdfIn PDF document text
    • http://dexujin.iblogger.org/42942506322.pdfIn PDF document text
    • http://zujakupuk.22web.org/pinapawupufojeko.pdfIn PDF document text
    • https://cdn.sqhk.co/doxinotilid/gidH6hb/88145759467.pdfIn PDF document text
    • https://cdn.sqhk.co/xerejijasoma/ggguNii/lugofokox.pdfIn PDF document text
    • http://xenuponominabek.iblogger.org/best_free_reader_software_for_windows_10.pdfIn PDF document text
    • http://jopekeniwuvino.iblogger.org/cameroonian_dishes_recipes.pdfIn PDF document text
    • http://nuxulaxidiga.iblogger.org/guzoxiputo.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/Z6UWgcd/princess_cruises_medallionclass_app.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/cgihin7/business_strategy_manager_salary_singapore.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/geraromu/bajrang_dal_dj_remix_naa_songs.pdfIn PDF document text
    • https://ab9101c8-a046-40a0-ba79-761bab9f3367.filesusr.com/ugd/61fb7c_00c3d3093aff476dba82472b277c3fba.pdf?index=trueIn PDF document text
    • https://983c8978-ad56-435f-a988-47358aa6040c.filesusr.com/ugd/06a663_b611203b5d13499ea5a89e8ea8b60dea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/26029024977.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/what_is_the_storyline_of_sense_and_sensibility.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/51781478942.pdfIn PDF document text
    • https://ec75ba9f-29a7-4b73-bb51-4c951d20089f.filesusr.com/ugd/17cde0_4db722f3cddd4fafb26e0ee689e14d11.pdf?index=trueIn PDF document text
    • http://kamabutexukawiv.rf.gd/jolly_phonics_activity_book_4.pdfIn PDF document text
    • https://9a4b5e96-23fe-4021-9525-787506808755.filesusr.com/ugd/b3318b_cf7d78e1b21546afa7607acbc9b62564.pdf?index=trueIn PDF document text
    • http://vomonulesew.rf.gd/58731163089.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/xavupezimusadixebava.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/how_is_annual_leave_with_wages_calculated.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_e9aa3157bf194f79aca0d1f59e003ccf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/xesumurovuxe.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D43 5172 bytes
SHA-256: e1fbd3a13e1645487b5f23473523690beea9a7b749fbee0203df13dffde9cb32
font_01_sfnt_off00011ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED0 11064 bytes
SHA-256: 0253072c1b926e9fa237bccef710857030e510b582d3ad3e81e95c4e2075edb7

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