Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e262d13b3e9f13…

MALICIOUS

PDF

83.6 KB Created: 2021-06-10 02:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35f3c5dd1a291226d5245204c87deb29 SHA-1: e4191e1dcbf848e1ec6217ca644c35febcce9d77 SHA-256: 48e262d13b3e9f1345ecc2336c3814dae4989a291e180d6c5b2f08dc2dd91c09
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://cructi.ru/pbw?utm_term=hacksaw+ridge+watch+online+full+movie', which is likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://cructi.ru/pbw?utm_term=hacksaw+ridge+watch+online+full+movie
    • https://cdn-cms.f-static.net/uploads/4416923/normal_6033645683c73.pdf
    • https://cdn-cms.f-static.net/uploads/4453329/normal_60445ce43be41.pdf
    • https://cdn-cms.f-static.net/uploads/4476135/normal_601ba3da3490e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gijutexamuwa.pbworks.com/f/80528099056.pdf
    • http://pikalunik.pbworks.com/w/file/fetch/144742086/38139668520.pdf
    • https://uploads.strikinglycdn.com/files/5f1a07d3-74a2-4b07-bf00-b4ea4737018c/whatsapp_plus_v13.00.0_apk_descargar_para_android.pdf
    • https://uploads.strikinglycdn.com/files/59b63cb8-c02e-49e6-a4eb-40b7281bb45c/46172095879.pdf
    • http://gopamux.pbworks.com/f/kojogowerimiz.pdf
    • https://uploads.strikinglycdn.com/files/7e425855-5998-4663-a505-482ff8f6a23c/embedded_c_interview_questions_geeksforgeeks.pdf
    • http://viforepolu.pbworks.com/w/file/fetch/144998802/1070107364.pdf
    • https://uploads.strikinglycdn.com/files/a0ad4dfc-4210-488f-8d83-49c8fd17dfca/12699894480.pdf
    • http://safubudesowi.pbworks.com/w/file/fetch/144881448/john_gba_lite_pokemon_games_download.pdf
    • https://uploads.strikinglycdn.com/files/2792714c-2d17-4f5c-a128-7646fee221e9/cub_cadet_ltx_1050_transmission_drive_belt_diagram.pdf
    • https://uploads.strikinglycdn.com/files/a604f506-20e7-42c1-9313-1b0b85db873f/53290418910.pdf
    • http://fisagibop.pbworks.com/w/file/fetch/144928386/tom_hanks_incredibly_loud.pdf
    • http://lekipirunezi.pbworks.com/w/file/fetch/144427962/uppababy_vista_double_configurations_with_bassinet.pdf
    • https://uploads.strikinglycdn.com/files/f9f55913-6029-4157-b879-6a649ee23b78/que_es_la_historia_mundial_contemporanea.pdf
    • https://uploads.strikinglycdn.com/files/4acea5c4-30b5-4be0-aca2-f22e68ad9343/xutifomoratezateje.pdf
    • https://uploads.strikinglycdn.com/files/37d3479b-bb34-4cb6-a675-cc628de327c8/smart_trike_safari_monkey_instructions.pdf
    • http://buvulareka.pbworks.com/w/file/fetch/144825978/52954178272.pdf
    • https://uploads.strikinglycdn.com/files/2bc07375-a754-4fb3-94bc-b83c3e997303/jojagobezuduleperi.pdf
    • http://divogatupum.pbworks.com/f/the_fast_and_the_furious_8_download_in_hindi_filmywap.pdf
    • https://uploads.strikinglycdn.com/files/ec69f8dc-c060-4b07-8191-cc3788d3dc90/discrete_mathematical_structures_for_computer_science_by_dr_tremblay_and_dr_manohar.pdf
    • https://uploads.strikinglycdn.com/files/f62ae26c-c0e0-464a-bbe7-5147d751e51c/how_to_set_g_shock_ga_110.pdf
    • http://wemekojezum.pbworks.com/w/file/fetch/144598284/texes.pdf
    • https://uploads.strikinglycdn.com/files/f4c2657c-2b33-4786-914d-b43f02b90a7e/nagapunizurapor.pdf
    • https://uploads.strikinglycdn.com/files/92dbbd52-2044-461a-bcc1-792828cfb15d/zizupobelugo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faf1.bin
8682c2da17c8d3ef7afb2b271a42d8639c4143f5254558425e6765673e3f34cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF1 5496 bytes
font_01_sfnt_off00010d84.bin
b19db0435e701fafb34d1330895f7c41b974e7c56329de96405fca879bb7faaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D84 10612 bytes
font_02_sfnt_off000131bf.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131BF 4324 bytes

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