Malicious PDF — malware analysis report

Static analysis result for SHA-256 e371c46d4fee8af4…

MALICIOUS

PDF

76.8 KB Created: 2021-03-18 13:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 78fe16c332d3434f523479337b3e179f SHA-1: 5c595d764b32d0fe9befdbce06e8bf45aa5d8486 SHA-256: e371c46d4fee8af4e807bc3be79310d8e23c5b7aaf5f8e58e2519605cce75ccc
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, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to 'Tragedy of the commons fishing' and the authoring application, suggesting a lure.

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://resalured.ru/aws?utm_term=tragedy+ofthe+commons+fishing PDF link annotation
    • http://vutisonoj.sportsontheweb.net/tipos_de_canales_de_distribucion.pdfIn PDF document text
    • https://cdn.sqhk.co/kerikone/tFhcUjf/fupunepalo.pdfIn PDF document text
    • https://cdn.sqhk.co/gidulikegel/Jjfgejh/netflix_series_dark_season_3.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/8dA7Gih/lufak.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/AJih7ig/66327710175.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/jdjbmEV/rescue_911_tv_show_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/bowawugafux/LjdKifd/xozeputogijogevudivalese.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/hahb7ij/significado_de_preludio_musical.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/ibThig5/vanowofatiwukudamo.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/jbvjije/kimimoviti.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/QvMheIs/swim_park_io.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/zeOhdjB/11639229549.pdfIn PDF document text
    • http://pejazadajenatew.getenjoyment.net/drum_set_bookshelf.pdfIn PDF document text
    • https://cdn.sqhk.co/jibetovo/gfiihei/japan_train_simulator_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/hbjjZqQ/my_boss_movie_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/sojetaji/Mjer9Lf/lasenosozobem.pdfIn PDF document text
    • https://cdn.sqhk.co/sapidefapo/7npJndT/dazuwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vewawisu.onlinewebshop.net/umbral_aerobico_y_anaerobico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6d1bf6-e65f-4efa-b2b2-ba9b42e57dbf/administering_windows_server_2012_r2.pdfIn PDF document text
    • http://zujakogi.onlinewebshop.net/catholic_holy_bible_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2ea7d80-14e2-4bc6-817f-023690ff7a38/the_rosie_project_movie_watch_online.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/what_are_primary_standard_and_substandard_voltmeter.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_off0000ee4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 5456 bytes
SHA-256: 3bd3286543ddfeab4474e459d556662a4de3a272b682e52891663f6216d0841c
font_01_sfnt_off000100b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B5 10884 bytes
SHA-256: 3d6e537b4272f165dbceac00283e473eb15648c82f099aee2a5f7931e9ea7f3e

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