Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c2bf02a3ebc119…

MALICIOUS

PDF

85.9 KB Created: 2021-03-24 09:31:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cd5154c0e3070fac638d3944f9a9f3b SHA-1: bf34a3414e6bd635eda3adeb0c674c0c0f1dc0be SHA-256: 05c2bf02a3ebc119040d8a3911c7d45cd9df500ebe679b60cf825859d8ca3891
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The PDF's structure and embedded content suggest a social engineering lure, possibly related to an award or prize, to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/award?keyword=japanese+business+dictionary+pdf
    • https://cdn.sqhk.co/jugomuzuteb/ghgetrS/at_t_prepaid_sim_card_activation.pdf
    • http://damita.fun/jay_z_reasonable_doubt_raravx5c.pdf
    • https://cdn.sqhk.co/givifevulo/ihThfgg/tasks_todo_list_task_list_reminder_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4402960/normal_60303fbe1033a.pdf
    • http://1xbet-sportstavki.fun/gazufuseriruvevirelukafilfic4.pdf
    • http://mon-cmbretagne.best/tubemate_video_app_download_2018m2zrd.pdf
    • https://cdn-cms.f-static.net/uploads/4416921/normal_60152975ab010.pdf
    • http://usacreditcheck.info/bidejoretibaxumhalr.pdf
    • https://cdn.sqhk.co/vozevadijut/fheUgjH/lokem.pdf
    • http://getveran.site/dixie_narco_501e_cam_settings6ijue.pdf
    • https://cdn.sqhk.co/nexetifosam/igriha5/house_of_fun_slots_casino_similar_games.pdf
    • https://cdn-cms.f-static.net/uploads/4497346/normal_60248e8b678e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_25e301c56b8047759325089053ba822e.pdf?index=true
    • https://s3.amazonaws.com/tuxenipup/fijavepuxutumojeti.pdf
    • http://fedununa.epizy.com/rational_oven_cleaning_manual.pdf
    • http://vepipivozox.rf.gd/l_alchimiste_coelho.pdf
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_e629660ff1a64dfaa8b663b34d58606a.pdf?index=true
    • https://s3.amazonaws.com/voropa/87083690431.pdf
    • https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_ba7b39493b1a43a480f11c1aa54bd411.pdf?index=true
    • http://firuwasuwubo.epizy.com/90041286904.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_off000112bf.bin
85c6f82c6be668e71ede8954898b2749ed423bd599418307c72b57d8cbc810a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x112BF 5348 bytes
font_01_sfnt_off00012502.bin
c9bfcf9cdb28e824967bb9969cf09c26addebdd2f148a09d557b74044dbd3897
pdf-font-stream PDF embedded font (sfnt) at offset 0x12502 10980 bytes