Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d18d22e2b0a47a…

MALICIOUS

PDF

84.8 KB Created: 2021-03-15 12:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa4a33de98a29ad29b5bf2a197698709 SHA-1: 7c666d621a3c4644341032908820c2f19da56fae SHA-256: e9d18d22e2b0a47a6f39461c8a2cab0e62557717fb87c684462f1bd626af730f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that is likely used to deliver a malicious payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users through deceptive content.

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://kuzutuzo.ru/strik?utm_term=hp+z440+motherboard+type
    • http://diporesorojina.scienceontheweb.net/87083846691.pdf
    • https://vuxukavimegi.weebly.com/uploads/1/3/5/3/135328550/refituruwogonar-lufazumuwurar-zovenokipi-gojekolozizuxus.pdf
    • https://cdn.sqhk.co/baruduwege/jdDjgmn/fruit_cutting_game_free_download.pdf
    • https://cdn.sqhk.co/xajamenujo/d1Chejj/us_army_stickman_rope_hero.pdf
    • http://tedurelaseji.mygamesonline.org/82139360554.pdf
    • http://rejorevubirobu.sportsontheweb.net/gizamiroxozaled.pdf
    • https://cdn.sqhk.co/mekibekowufe/a4jiQPu/wovonoxibufelegawebex.pdf
    • https://cdn.sqhk.co/mafowixodi/eeWU7HL/18721571487.pdf
    • http://samafutanub.mypressonline.com/97348830235.pdf
    • http://vodabutopidaru.getenjoyment.net/bugaboo_frog_seat_cover.pdf
    • https://cdn.sqhk.co/jawuraxexije/DHgfkYC/daxerejotodawolimenod.pdf
    • https://fugunukotuji.weebly.com/uploads/1/3/4/5/134589730/b97842714a9a490.pdf
    • http://kagaromorin.medianewsonline.com/ruzofofewexopaxidofuzegop.pdf
    • https://radixukawatezod.weebly.com/uploads/1/3/4/6/134645496/3062287.pdf
    • https://degovemidim.weebly.com/uploads/1/3/4/0/134017519/nozeziliwade.pdf
    • http://vuvulusigi.scienceontheweb.net/rumoki.pdf
    • http://dazenad.iblogger.org/dejar.pdf
    • https://zajinepimasi.weebly.com/uploads/1/3/2/8/132815118/7f1148e7d0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ef3dd753-1b64-40f5-b464-0cb7ee46e3ae/80430714475.pdf
    • http://xenezipulugiji.atwebpages.com/excel_vba_copy_range_of_cells_into_array.pdf
    • http://kasegame.rf.gd/interjection_sentences_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/aaf1076e-5d4a-4156-b10a-f1d923a09ce7/40204432646.pdf
    • http://mopafanimuwez.epizy.com/82375147326.pdf
    • http://kibululugavi.epizy.com/ammonification_and_nitrification.pdf
    • http://vilepobafomunow.atwebpages.com/char_broil_infrared_grill_ribs_recipe.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_off000101b4.bin
7d1b98a67ccffd2d4bd2433de52cfc46d34a3c63f8a24a4e7f533c8a21241a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101B4 5472 bytes
font_01_sfnt_off0001142d.bin
c670848b3fcac2d52ad02c9e668e6bc9113f42d2012595d2897cdbee18ca33d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1142D 16708 bytes

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