Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b691e7b9687d97…

MALICIOUS

PDF

74.1 KB Created: 2021-06-08 21:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32bdb9292076af5a8a699b49919f9466 SHA-1: f44085c2cb87072640a2af32935aaae465e425a7 SHA-256: e2b691e7b9687d97b7a474cefa3f74ca9b08fa710e9daf3ec69b874f6d824af9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to 'synerhu.ru', which is flagged as malicious. The document body, though heavily obfuscated, appears to be related to a search query for 'Lego ninjago shadow of ronin apk obb', suggesting a lure to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://synerhu.ru/pbw?utm_term=lego+ninjago+shadow+of+ronin+apk+obb
    • https://cdn-cms.f-static.net/uploads/4366357/normal_601ac319e640e.pdf
    • https://static.s123-cdn-static.com/uploads/4479933/normal_5fe0fd3918026.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ritijix.pbworks.com/f/xojipalos.pdf
    • https://uploads.strikinglycdn.com/files/0df8be38-24dc-45de-bbf5-534169aa1c81/gikiniziboxixapavabej.pdf
    • https://uploads.strikinglycdn.com/files/f3a24b5d-c3ba-49f7-b0f1-d8c52d6fc16f/vapumejalagumunosijedujob.pdf
    • http://laxaxufudej.pbworks.com/f/what_does_a_word_in_square_brackets_mean.pdf
    • https://uploads.strikinglycdn.com/files/3d1a2944-b71b-4017-b807-56a6c087753d/maze_runner_3_full_movie_download_in_hindi_480p.pdf
    • https://uploads.strikinglycdn.com/files/9f936372-68d2-402f-9da3-d488299b6fc2/1997_honda_civic_automatic_transmission_fluid.pdf
    • http://nugewil.pbworks.com/w/file/fetch/144611511/el_caballero_dela_armadura_oxidada_preguntas_y_respuestas_captulo_4.pdf
    • http://betifabito.pbworks.com/f/62112438319.pdf
    • http://jadubunid.pbworks.com/f/fire_emblem_warriors_weapon_skills_guide.pdf
    • https://uploads.strikinglycdn.com/files/8ade4f74-7d75-43a9-ad29-017780672e72/como_agua_para_chocolate_capitulo_3_completo.pdf
    • http://pudomasepok.pbworks.com/f/bexuzimosabuvituv.pdf
    • https://uploads.strikinglycdn.com/files/84211127-4fd8-489f-aa58-99e57a6515f1/sony_rm-vlz620_apple_tv.pdf
    • http://zilebunod.pbworks.com/f/92942285563.pdf
    • http://febigadeviti.pbworks.com/f/oreilly_car_battery_return_policy.pdf
    • https://uploads.strikinglycdn.com/files/82afc5c8-377a-467b-80b3-5c26d7483a19/carx_drift_racing_hack_apk_revdl.pdf
    • http://liguduper.pbworks.com/f/grammar_worksheets_4th_grade.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_off0000e158.bin
ae130259d634401db8fd0d61fc3471a48a416329b564e1d6c0c8305a8970dca9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 5584 bytes
font_01_sfnt_off0000f466.bin
1fde75fb8f38f4c210a2c04edf752ab76c4746595153dec91fe6bde75283d90f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF466 11252 bytes