Malicious PDF — malware analysis report

Static analysis result for SHA-256 25aaed9cec26c9df…

MALICIOUS

PDF

130.2 KB Created: 2021-03-31 01:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 273acdc309b8be665fab85c307cdb088 SHA-1: 03206c2be00f53b7078632fe782288c1a665e156 SHA-256: 25aaed9cec26c9dff009dadf546e19b43667e8dc7ede28e59c924c12ebb8375f
94 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, 'dugedepap.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'Walt Whitman biography book'. No scripts were extracted, but the PDF structure and embedded URI indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

Heuristics 3

  • 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
  • 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://dugedepap.ru/strik?utm_term=walt+whitman+biography+book
    • http://nofixeb.iblogger.org/community_acquired_pneumonia.pdf
    • https://cdn-cms.f-static.net/uploads/4374372/normal_6058d94bbfdc7.pdf
    • http://gewusoluxul.scienceontheweb.net/dudupu.pdf
    • http://gapijet.scienceontheweb.net/iperaldosteronismo_secondario.pdf
    • http://mutugupepu.iblogger.org/future_perfect_tense_exercises_worksheet.pdf
    • http://jenuxijaf.mygamesonline.org/java_online_test_questions_and_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4405641/normal_603aaf336b460.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/38c28a3f-3893-4d56-9348-b94e3d4df05f/how_to_reset_garmin_vivofit_2.pdf
    • https://uploads.strikinglycdn.com/files/4bd80520-f84f-4684-a766-13a5c8f153ff/18639205293.pdf
    • http://kapirexazi.onlinewebshop.net/diccionario_biblico_mundo_hispano_n_z.pdf
    • https://uploads.strikinglycdn.com/files/a344b932-3fae-48ab-b61b-ad9e0acdb67a/lafogininorirume.pdf
    • http://nunetam.epizy.com/85679021445.pdf
    • http://doritiwenoxa.onlinewebshop.net/zupamokavozuwurejo.pdf
    • https://uploads.strikinglycdn.com/files/526a6c6c-9eb7-4b73-82be-df4dc4a6852f/the_sufi_book_of_life.pdf
    • http://fozilixugijuva.epizy.com/how_to_pair_plantronics_voyager_focus.pdf
    • https://uploads.strikinglycdn.com/files/33935ab8-ca2a-441c-9cc7-e91cc88fab94/how_to_write_an_introduction_paragraph_about_yourself.pdf
    • https://uploads.strikinglycdn.com/files/a414151d-0a2a-45e9-9ba0-f82a4ff4f9eb/91091972315.pdf
    • https://uploads.strikinglycdn.com/files/6911b389-82cf-416d-b349-bdc836fb7829/how_to_arrange_colors_in_cube.pdf
    • https://uploads.strikinglycdn.com/files/baa96af8-cdf4-4cb0-a136-4d97ea2e451e/pathfinder_undead_monsters_by_cr.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d121.bin
91ffc5d1e5072b7761774f07ece3a110d086d91b310ee8226acb8c872845c82b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D121 5464 bytes
font_01_sfnt_off0001e3a8.bin
dd5d925a7d4a680036b5ca13c063f5323960713a76814d742506cbe12a89092d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E3A8 12268 bytes

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