Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4ddc85cb949ee5…

MALICIOUS

PDF

75.6 KB Created: 2021-05-02 01:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 5977939aa12769d2b8094b6b2888bcf4 SHA-1: 5c2eecac16d1d443bb1d3c6269832829a43144ab SHA-256: 8c4ddc85cb949ee5a6aa25122c26b2caeb65e6e14a4cd1d45971d2f5ab8ec978
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to 'maritime law' and includes an external URI pointing to 'xajibur.ru'. This suggests a phishing or social engineering attack, likely using the document as a lure to direct the user to the malicious URL. No scripts were extracted, but the presence of an external URI and the phishing detection strongly suggest an attempt to compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=what+is+the+definition+of+maritime+law PDF link annotation
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/jhOTges/30795292620.pdfIn PDF document text
    • https://cdn.sqhk.co/vivokunavu/bhfpUaN/world_conqueror_2_cheat_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/5mjgWhc/free_gems_monster_legends_2019_no_human_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/purizepore/hjiZhf6/varoziwutakosu.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/40206935619.pdfIn PDF document text
    • http://zugobopepoj.sportsontheweb.net/system_analysis_and_design_project_proposal_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/ieaZzJg/66266909411.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/hgiiwjD/jumapenedivanutefivobe.pdfIn PDF document text
    • https://cdn.sqhk.co/gujurolekuma/rjfuidf/billion_builders_mod_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tibutariwu.myartsonline.com/dr_bm_hegde.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17dc2bf8-5cd1-4992-b94c-bfc0571ba885/does_chick_fil_a_serve_chicken_nuggets_in_the_morning.pdfIn PDF document text
    • http://gakajitaju.atwebpages.com/38886683847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a7a987-664b-4886-9f7d-f1f1a8f65b01/36121139755.pdfIn PDF document text
    • http://guxejusoselota.myartsonline.com/bibadoxela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/459eada1-5a35-4907-bd6d-e901afa4e2ee/95548877187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed487d1-c4fc-45b1-afe5-80198b30c2bb/what_animals_live_in_an_ecosystem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e43c187-cb30-49fd-ba43-52ec4519387b/katorulifedavurirem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76d059e7-ad9a-49a3-ac61-ca3bc5a880dd/97021350125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83bea934-26ec-4d9c-adb4-067ac001181b/lenovo_thinkpad_t430s_i7_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90394d09-122a-4165-95e8-94c04b89373d/zufodamipagasoxuliride.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1446982d-33bf-459f-997e-261831ca2607/how_to_wire_transfer_money_becu.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_off0000e875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE875 5252 bytes
SHA-256: 5611ba4b9851c8409bfbe2d0147197bc415ed1d4a56a1d845c048ea86efdf0f4
font_01_sfnt_off0000fa3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3C 11536 bytes
SHA-256: 14afbf60d03330ea5fc9851e167819515529c97da03465d14f54a1ac1d4f30c2

Open this report in the interactive analyzer, or submit your own file for analysis.