Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab8c6a026091125…

MALICIOUS

PDF

75.3 KB Created: 2021-03-21 02:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 601c4d9e64dd0fe5b6164e9f6a8e3049 SHA-1: 29761f692b72eda984804c49303e216020aaf234 SHA-256: aab8c6a026091125e061ca573abf624c5cedf70cfff56b5a52507100424c5a1f
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, indicating a phishing or trojan threat. It contains an embedded URL pointing to 'lozipotod.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to health guidelines, aiming to trick users into clicking the malicious link.

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://lozipotod.ru/123?utm_term=cholesterol+level+guidelines+2019
    • https://cdn.sqhk.co/dovumisiwe/YojbgNi/antivirus_smadav_hp_android.pdf
    • http://pasendapp.online/auriol_weather_station_instruction_mrkmfc.pdf
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/5028971.pdf
    • https://zekorawuj.weebly.com/uploads/1/3/4/8/134862422/filusitox.pdf
    • https://cdn.sqhk.co/zujumatatub/ge8QghE/zombie_herobrine_skin.pdf
    • https://cdn.sqhk.co/zopimoforaja/adp9Tjg/download_nerf_epic_pranks_mod_apk_unlimited_money.pdf
    • https://cdn.sqhk.co/jonimaze/1pAhjoO/fireboy_and_watergirl_5_elements_play_online.pdf
    • https://cdn.sqhk.co/dutaxato/hhPhdhq/freeze_panes_excel_2016_mac.pdf
    • http://rodsfish.club/jofukizu9zxpz.pdf
    • http://disconto50.info/starbucks_coffee_mugs_buy_online_india3fb2j.pdf
    • http://openplafond.xyz/85908185751zzsq9.pdf
    • http://wacc-cat.org/jegogusakacuilr.pdf
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/8325546.pdf
    • http://opsnatur.fun/lesutenisimopoganejadazu6g5dx.pdf
    • http://digtalcaliper09.xyz/rugikefar6dlyq.pdf
    • http://mybiol.site/29963325422lza2.pdf
    • http://alcozerox.com/xusizelenakukipukodegabag7wcdi.pdf
    • http://dasonudulikuvon.22web.org/tosawazitefegalikorelag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nugibupir.epizy.com/46584797018.pdf
    • http://jivinogitejif.epizy.com/common_word_families_for_kindergarten.pdf
    • http://fepoxojosatomu.epizy.com/8th_grade_history_textbook_california.pdf
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_644cb529631045baab6c9e29ddb307ae.pdf?index=true
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_bf426a86a91f469b96f7f499a931ed10.pdf?index=true
    • https://87164119-88a6-4d6d-a72f-b109cf2d88b9.filesusr.com/ugd/bd0a66_78904330d35f4769bfa9023e31d43431.pdf?index=true
    • https://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_d8cb24687e8d449db906eec47a1b1ed8.pdf?index=true
    • https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_f6b5fbf288cb4a5ea46985cd912479ab.pdf?index=true
    • 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_off0000e9eb.bin
2757af70cc8b4ee3e970a7edaba584c8ddd9115267f8df10a6b2c3dee80fb7c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EB 5324 bytes
font_01_sfnt_off0000fc09.bin
f0a46750c605a31165d97dfa9336ed1ea520715ca5b5dead2b77c5f4eba4739b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC09 10460 bytes

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