Malicious PDF — malware analysis report

Static analysis result for SHA-256 4361fbe207c38ffc…

MALICIOUS

PDF

80.8 KB Created: 2021-04-25 23:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f9aa39d82451cc58149c19c7123b839 SHA-1: 79cee6ef917b648933e6bd23743eeaed46f66148 SHA-256: 4361fbe207c38ffcaaec5fa5154ab91b32c40f7df87b38a36540600b2514648f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to deliver a phishing page or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to drawing cartoons, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://seumenha.ru/strik?utm_term=how+to+draw+cartoons+book+pdf
    • https://cdn.sqhk.co/naruxibe/i2idSSk/menewonogijexulipibuge.pdf
    • https://cdn.sqhk.co/godezixibufo/iFBsX1D/fish_aquarium_near_medavakkam.pdf
    • https://cdn.sqhk.co/konarolikomu/iiIl115/suliboveji.pdf
    • https://cdn-cms.f-static.net/uploads/4460980/normal_6027e580a39c7.pdf
    • https://cdn.sqhk.co/zimopaji/cUl7Aij/vomanogosabofarazebal.pdf
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5fffeaa639b54.pdf
    • https://static.s123-cdn-static.com/uploads/4380530/normal_5ff6c45890f79.pdf
    • https://cdn.sqhk.co/xibumediw/KhhaBc6/class_10_maths_solutions_chapter_11.pdf
    • https://cdn.sqhk.co/ributexovek/hj2AibG/magnificent_marvelous_matchless_love_sheet_music.pdf
    • https://cdn.sqhk.co/xokebuzizo/tjfhbgi/43265757041.pdf
    • https://cdn.sqhk.co/wubukuxivupe/oOdVicK/pokemon_battle_arena_minecraft_map.pdf
    • https://cdn.sqhk.co/retagigimusa/4WjaUje/19077237727.pdf
    • https://cdn.sqhk.co/nufopusifa/ahjdric/aquapark_io_full_apk.pdf
    • https://cdn.sqhk.co/kimorotadopo/fgehcgf/xipegidepixa.pdf
    • https://cdn-cms.f-static.net/uploads/4380525/normal_60205a82ad127.pdf
    • https://cdn.sqhk.co/bubarozotuj/hjhahgL/hot_deals_4_less_review.pdf
    • https://cdn.sqhk.co/jabosuve/fobgiub/mini_browser_apk_free_download.pdf
    • https://cdn.sqhk.co/tusenepobam/FhhhfSE/99971554269.pdf
    • https://cdn.sqhk.co/pategazikiw/gfHic3w/hungry_shark_world_hack_mod_apk_2018.pdf
    • https://static.s123-cdn-static.com/uploads/4371812/normal_5ffa42e3e753d.pdf
    • https://cdn.sqhk.co/mopijiluxu/GvTjhhY/xinidux.pdf
    • https://cdn.sqhk.co/pesuxitum/ieghgiB/29107699437.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/76d0eec7-b2a0-4a15-b0bb-704373428f7e/35484871967.pdf
    • https://uploads.strikinglycdn.com/files/8f364350-6f81-4608-891f-1661bb84daf1/ketubisimupinal.pdf
    • https://uploads.strikinglycdn.com/files/a4ef0d1d-bd5b-48ef-bf59-bff0014e6634/chicco_bravo_trio_travel_system_how_to_use.pdf
    • https://uploads.strikinglycdn.com/files/2930b6a7-65f5-4e3c-b928-d915c0223d63/how_do_i_enable_screen_mirroring_on_my_tcl_roku_tv.pdf
    • https://uploads.strikinglycdn.com/files/40990071-6fee-410a-8d6d-07910395d019/how_to_use_monat_oil_intensive.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_off0000fccb.bin
7d0f6d9a30897e1b247bb8e9ad72769fd9345da3972cdc89182120d7e30772dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCB 5376 bytes
font_01_sfnt_off00010f2b.bin
04a69c9b427d7dbee78bb08482d6dfc87855e06de99ab8cd01c8000d2ad96ea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2B 10728 bytes

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