Malicious PDF — malware analysis report

Static analysis result for SHA-256 d402fedfaa4ce807…

MALICIOUS

PDF

84.2 KB Created: 2021-04-30 07:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc416e72b2ac7e6024b933b7a19b9217 SHA-1: bc41a686de3e7297d7b93ab6855e3550fe19a7b3 SHA-256: d402fedfaa4ce807941b763f9b168730813b858e837fbcecacf8aa8166053035
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, potentially leading to further exploitation.

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://jacksth.ru/strik?utm_term=how+much+is+a+heat+and+glo+fireplace
    • http://juzajikadig.22web.org/xugilabawafizezufo.pdf
    • http://rasudilikid.mywebcommunity.org/how_to_use_cuisinart_13_cup_food_processor.pdf
    • https://cdn.sqhk.co/vomuvojovi/gajiKjb/rusunefuzuvarinuvid.pdf
    • http://jekeluxuto.mywebcommunity.org/how_to_make_better_tables_in_powerpoint.pdf
    • http://rigoditibalun.mywebcommunity.org/catia_v5_wireframe_and_surface_design_tutorial.pdf
    • http://mewebewenuzotez.iblogger.org/the_book_of_enoch_with_yahwehs_name_restored_audio.pdf
    • http://gekifek.scienceontheweb.net/osteoporosis_fisiopatologia_2020.pdf
    • http://rm-swis-mine.com/aec-_326ka2-_10w_manualsi5rm.pdf
    • http://janetoxanonim.22web.org/wopete.pdf
    • http://m-ryanaf.site/zoruzakazazuxalaribubio6v94.pdf
    • http://blancop.xyz/3602-nz_form_2021oxyr2.pdf
    • http://savadaqwe.space/video_wallpaper_free_for_windows_7bw1uc.pdf
    • https://cdn.sqhk.co/fomeluxilim/iigjXmL/mobile_logo_png_black.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zuvovoxigumuz/annamalai_movie_free_720p.pdf
    • http://jasesazolaf.myartsonline.com/metabolic_syndrome_and_related_disorders.pdf
    • https://uploads.strikinglycdn.com/files/2518e968-f294-4640-8105-bceffc16b871/what_to_do_when_your_paper_shredder_stops_working.pdf
    • https://uploads.strikinglycdn.com/files/baf0ecfe-c7dd-4544-8188-9b7facf40f30/water_by_the_spoonful_fountainhead_monologue.pdf
    • https://s3.amazonaws.com/wewiro/how_to_start_an_expository_writing.pdf
    • https://uploads.strikinglycdn.com/files/b6ade2f6-9876-409c-8c82-e177f43f7b11/how_much_developer_do_i_mix_with_loreal_hicolor.pdf
    • http://jekewakus.epizy.com/55462483137.pdf
    • https://s3.amazonaws.com/dugibabafod/jararamiterewinubutarag.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edbf.bin
19fe6d3511270ee3ff4fbce704f5f4a9fb9182a4344e37e40a38d55828b07e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBF 3312 bytes
font_01_sfnt_off0000f9a0.bin
673186dd2d3f1b82a26574e2ee2c168cc04555527c856279e305b16b8720633c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A0 5504 bytes
font_02_sfnt_off00010c3d.bin
600918163d9b0bd6fc7c46d122ce4c548b934e7e0d8c452254b43f3343cc7867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3D 12368 bytes
font_03_sfnt_off000134db.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134DB 4324 bytes

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