Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ea7c25b470167f…

MALICIOUS

PDF

76.5 KB Created: 2021-04-10 04:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc659b35a76906c59cedc57a316da188 SHA-1: 50ded114e6fc316cce7ab24dfca3d83c6082b761 SHA-256: 05ea7c25b470167f27e218a5aa8ac0b442805df26f1f08179cd941322133e8ff
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, contains text that suggests a lure for a "Navy eval manual". The presence of an external URI indicates an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://ponafet.ru/strik?utm_term=navy+eval+manual
    • https://cdn.sqhk.co/pajerelo/3R6jeic/magic_music_tiles_tap_tap_piano.pdf
    • http://timurberg.ru/6799160159hulef.pdf
    • https://cdn.sqhk.co/rorajakura/hdjcScs/sonic_4_episode_2_hd_mod_apk_aptoide.pdf
    • https://cdn.sqhk.co/jifigetuxu/wliizRo/17892602955.pdf
    • https://cdn.sqhk.co/sadirorig/1NicpUQ/90693177975.pdf
    • http://edevletorg.com/pivesorefxgrvp.pdf
    • https://lozukiwilef.weebly.com/uploads/1/3/4/6/134644014/25cd3e22.pdf
    • http://auto-agents.space/exercice_algorithme_avec_solution_pd4759s.pdf
    • https://jeburetuzof.weebly.com/uploads/1/3/4/3/134306955/1701677.pdf
    • https://cdn.sqhk.co/wotedimozer/idhiajh/79357790660.pdf
    • https://zovigimezudisa.weebly.com/uploads/1/3/4/7/134725875/932096.pdf
    • http://ropukejak.22web.org/basic_marketing_mcq_questions_with_answers.pdf
    • https://rukufutuseju.weebly.com/uploads/1/3/4/7/134748195/butuwupugazalob.pdf
    • http://ganirutejiz.iblogger.org/70790237921.pdf
    • http://sellforce.ru/junkspace_rem_koolhaas1wcbe.pdf
    • https://vobasonuniba.weebly.com/uploads/1/3/4/6/134668907/veluxovopejem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://navunegovexad.rf.gd/livro_administrao_financeira_groppelli.pdf
    • https://s3.amazonaws.com/zatazewoz/atrocity_act_in_marathi.pdf
    • https://s3.amazonaws.com/daxemo/35737914174.pdf
    • https://s3.amazonaws.com/wowonesoribu/jigufarufifuro.pdf
    • https://uploads.strikinglycdn.com/files/6c73c0ac-6a3f-481f-8232-f7038744cd8f/87607701805.pdf
    • https://uploads.strikinglycdn.com/files/2152c69d-2d88-4641-bcee-e6867fad454f/tepixujisew.pdf
    • http://xepadegi.epizy.com/3d_vr_box_video_free.pdf
    • https://s3.amazonaws.com/feseni/75517916932.pdf
    • https://uploads.strikinglycdn.com/files/1f3b6332-3d51-4b26-9732-e0c90457d212/26043413358.pdf
    • https://uploads.strikinglycdn.com/files/d1f33b4e-dafe-4c4e-9d71-3b0514386add/intelligent_sports_bracelet_e02_oled_manual.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_off0000f1d3.bin
58ff2076f83fcfad73019d0f45b0da120bc76d96368d729acc3b61ab053d5313		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D3 4688 bytes
font_01_sfnt_off000101c4.bin
f5ef1a9f4799052764f91a1b18de4b09bc846a3143ae9d2c1e1dda0d807d1e9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101C4 10276 bytes

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