Malicious PDF — malware analysis report

Static analysis result for SHA-256 85eb696817b8cbbc…

MALICIOUS

PDF

70.4 KB Created: 2021-03-12 03:17:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91a617036299390e765fb8bdedd77ad5 SHA-1: 59da6908489a42225477aa3df1ccaced445457fb SHA-256: 85eb696817b8cbbc810492a625cbe6f407928a852c05444318e22fcb7cfb6a49
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL points to a domain that appears to be part of a phishing lure, suggesting the document is designed to trick users into downloading further malicious content. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/award?keyword=ashokan+farewell+free+pdf
    • http://zutatowatipo.mywebcommunity.org/what_bible_says_about_adultery_and_fornication.pdf
    • https://cdn.sqhk.co/gufojakig/b97bje1/rugby_league_19_hack_apk.pdf
    • http://dilawiputonu.mypressonline.com/who_makes_rheem_furnaces.pdf
    • https://cdn.sqhk.co/fefowofuk/epjjhXb/mulolorevipesiv.pdf
    • http://fivadoguna.medianewsonline.com/zadenowirazugutilof.pdf
    • http://fanutoragozogow.sportsontheweb.net/xijubuluse.pdf
    • https://cdn.sqhk.co/verexoleki/bgdbgeU/descargar_nitro_nation_drag_y_drift_para_pc.pdf
    • http://niwizonoleror.mywebcommunity.org/banking_ombudsman_scheme_2020.pdf
    • http://kitukotobov.medianewsonline.com/jixabijuje.pdf
    • https://cdn.sqhk.co/xexegapimuwi/qVXieij/turbo_dismount_2_unblocked.pdf
    • https://cdn.sqhk.co/fepexeguma/dgjjBif/fill_color_rectangle_photoshop.pdf
    • http://vurovolapoza.mygamesonline.org/9534769313.pdf
    • http://pupigojoniru.mypressonline.com/currency_trading_tutorial.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tuparibuju.atwebpages.com/cloud_atlas_cast_jocasta.pdf
    • http://naxesabefadufu.atwebpages.com/fefim.pdf
    • https://s3.amazonaws.com/lixuduwonifa/media_player_classic_2019.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/62320629106.pdf
    • http://ziwemasux.myartsonline.com/29780483525.pdf
    • http://xuxerutiwuv.onlinewebshop.net/357318772.pdf
    • http://lajovaputap.myartsonline.com/bodyboss_method_free.pdf
    • http://liroporuki.myartsonline.com/fz_bike_new_model_2017_mileage.pdf
    • https://s3.amazonaws.com/tamovagag/bloomberg_live_tv_android_app.pdf
    • https://s3.amazonaws.com/geraromu/biogeochemical_cycles_activity_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c960.bin
997bced5c8c4f1eaa750c6edfa4743f03672a13095f4409a65a6ef6c359034b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC960 4936 bytes
font_01_sfnt_off0000da1c.bin
ea6e0a47603c8f3127a388be0ef42ec438481e2828911d328e5db7eec2c4c35b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1C 10568 bytes
font_02_sfnt_off0000fe23.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE23 4324 bytes

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