Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0ae3dd48ec2eb7…

MALICIOUS

PDF

73.9 KB Created: 2021-03-17 02:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51f96776dc502928e146a4521145c112 SHA-1: 19ea2bb3cddcf9e2ab5660d727891055f5b793be SHA-256: 9f0ae3dd48ec2eb7578bcbacbfc07864bb6211e3dedeb81a34c18c81dc0829ae
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=spongebob+pedigree+worksheet
    • http://options.expert/cookie_clicker_sugar_lump_guide094t7.pdf
    • https://cdn.sqhk.co/nawiwola/ijc8gjJ/7605980564.pdf
    • http://puditutado.22web.org/xubawodagefime.pdf
    • https://cdn.sqhk.co/vonitumefide/qihYUid/doot_meme_doom.pdf
    • http://xolokukifimiv.sportsontheweb.net/luis_vaz_de_cames_biografia.pdf
    • http://vumogegotawugub.mypressonline.com/romeo_y_julieta_resumen_de_cada_capitulo.pdf
    • http://herss.space/gegajanerkoi.pdf
    • https://cdn.sqhk.co/mekaxosur/jgecsjf/farm_day_village_farming_offline_games.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dbe91b8a-24ec-4168-af61-aaf190394a56/58410709660.pdf
    • https://uploads.strikinglycdn.com/files/be2b3179-41d9-4cba-b9bb-522d67c5d356/my_toshiba_laptop_battery_is_plugged_in_but_not_charging.pdf
    • http://xezevoxanomidul.rf.gd/55572875648.pdf
    • https://uploads.strikinglycdn.com/files/0e268a2b-e0f9-49b3-8cc2-371a56f9e535/how_to_write_rebuttal_paragraph_in_essay.pdf
    • https://uploads.strikinglycdn.com/files/c010e098-47d7-4efb-8acf-fab4b5d301b9/arduino_2560_tutorial.pdf
    • https://uploads.strikinglycdn.com/files/122c238c-08b0-49f9-8a8f-83b56e0a55fc/do_you_need_an_adapter_for_xbox_one_turtle_beaches.pdf
    • http://zepaxawom.rf.gd/angamaly_diaries_film_song_free.pdf
    • http://tirigofov.atwebpages.com/tugometufoxuwomowevobob.pdf
    • http://jokiperone.epizy.com/rpg_maker_vx_ace_android_apk.pdf
    • http://bifiwapaz.onlinewebshop.net/indian_food_recipes.pdf
    • https://uploads.strikinglycdn.com/files/f5ef79c8-f7e4-4229-a6f4-7c4143cdb1db/ver_percy_jackson_3_pelicula_completa_en_espaol_latino.pdf
    • https://uploads.strikinglycdn.com/files/02fb21c8-4fe9-4c2e-a1e0-c0a3fa441b1d/the_short-run_average_total_cost_curve_is_u-shaped_because_of_the_law_of_diminishing_returns.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_off0000e3e3.bin
a1c4edeb7c1381502e81d8bc1b35d7a3bd7c02273193d0004a1e0657cfacf8ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E3 5376 bytes
font_01_sfnt_off0000f638.bin
ea2b693d091c7b9557aab371fe09e6560977da83365baba51f20adea9893385e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF638 10768 bytes

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