Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edc6106da94d4ba…

MALICIOUS

PDF

72.8 KB Created: 2021-03-22 20:22:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97950426819b520988c086f5287716e6 SHA-1: 66265209e382fdac287487f5417583ae6a4724c3 SHA-256: 8edc6106da94d4ba835434d8cdb6fa61441e26107f1c52c4d96ceb68840b75e4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used to host a phishing page or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to 'Json-ld tutorial pdf'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://botokaw.ru/strik?utm_term=json-ld+tutorial+pdf
    • http://biomanua.website/dawarezovamuferanejaxeywsy9.pdf
    • https://cdn.sqhk.co/jarixizotib/d0P9hyH/ninja_assassin_warrior_legendary_super_hero_survival.pdf
    • http://gogosesetuver.22web.org/descargar_aperturas_de_ajedrez_gratis_en.pdf
    • http://promoocaoameericanas.com/ao_smith_water_heater_manualqkc4s.pdf
    • http://itanto.space/les_miserables_25th_anniversary_concert_soundtrack_download3pd6o.pdf
    • https://cdn.sqhk.co/limizolaxa/fqTD3gd/multicraft_panel_commands.pdf
    • http://itnegozio.info/2251779312vhcct.pdf
    • http://usacreditscore.info/23435020955pwbam.pdf
    • https://cdn.sqhk.co/kubepugemaki/gji2Km9/36892301591.pdf
    • https://cdn.sqhk.co/gapalagabig/aSq7ijZ/xetejotawevonabu.pdf
    • http://dazinifuxevoji.22web.org/501974063.pdf
    • http://zajowidased.iblogger.org/mijepufewuweno.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kufazete/gb_twitter_apk_latest_version.pdf
    • https://s3.amazonaws.com/fizaxo/zunosaw.pdf
    • https://uploads.strikinglycdn.com/files/b65a0be9-a6ec-4a2c-b3b9-ad01c5803b13/xorodelulodevenuda.pdf
    • https://uploads.strikinglycdn.com/files/5b0acbac-cc7a-4476-a1fd-ad36a7a05317/yamaha_mg24_14fx_price_in_india.pdf
    • https://uploads.strikinglycdn.com/files/5b86cd77-3c91-4cb2-8627-c961558d2f04/menimimefupufi.pdf
    • http://bafopivazizaxon.rf.gd/mirro_12_qt_pressure_cooker_m-0512-11_manual.pdf
    • http://jogulele.epizy.com/predator_6500_generator_specs.pdf
    • https://s3.amazonaws.com/legipalofi/nespresso_vertuoline_descaling_mode.pdf
    • https://s3.amazonaws.com/numegubowalonan/fodeva.pdf
    • https://s3.amazonaws.com/dinilederu/physical_science_grade_11_mechanics.pdf
    • https://s3.amazonaws.com/vavabi/bholanath_stepper_manual.pdf
    • https://s3.amazonaws.com/dobesogum/swing_trading.pdf
    • https://s3.amazonaws.com/jivagajamav/dibetivakevupunu.pdf
    • https://s3.amazonaws.com/litunux/emirates_airline_cabin_crew_uniform.pdf
    • https://s3.amazonaws.com/zunaporam/69273118289.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_off0000de18.bin
5f7bad2fda0749e0f55274042cb220db8cb93c3c2a174386cba22049e3ea20c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE18 5056 bytes
font_01_sfnt_off0000ef5c.bin
5756812213d873be7016a503fefba46104f0761024593c31a065e83860702792		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5C 11152 bytes

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