Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59500ec71e48359…

MALICIOUS

PDF

77.9 KB Created: 2021-03-10 10:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f44df32a565db067b87bdecf70955f5 SHA-1: bd3eac1e6e4428a784aa15d963fab2eefbdb809f SHA-256: b59500ec71e4835939fc33bfb506d7ce45af616ed75f81c90f7fdc2382cc25c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Kansas warrant search'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/wix?keyword=kansas+warrant+search
    • http://zdsshop.top/taylormade_loft_sleevei7qsv.pdf
    • http://lngcliente.com/dugumapujavuwofiruvafn4fe.pdf
    • https://ninefajesazaga.weebly.com/uploads/1/3/5/3/135384029/8154878.pdf
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/vudubugudex.pdf
    • http://jofadebujidut.22web.org/vowofebebolejuromiposebix.pdf
    • http://digosige.mywebcommunity.org/munatunetejipoxared.pdf
    • http://dirtygirl.fun/learn_html5_in_24_hourscozcp.pdf
    • https://bipagaposelugi.weebly.com/uploads/1/3/4/4/134479594/6879227.pdf
    • http://nutristrike-shop.ru/anime_mugen_games_apk9gjpx.pdf
    • http://vorakumezaxof.mygamesonline.org/panasonic_phone_customer_service_canada.pdf
    • http://bluebadge-support.com/intex_krystal_clear_12_sand_filter_pump_for_above_ground_swimming_poolyieyg.pdf
    • https://fesifikigit.weebly.com/uploads/1/3/5/3/135319823/kobaxadalavoza_nurep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bulozor/24118706286.pdf
    • http://fubolorira.epizy.com/85027593037.pdf
    • https://s3.amazonaws.com/limepusotanal/what_time_do_stock_markets_open_in_new_york.pdf
    • http://vepupenaj.rf.gd/sujeseziwixedojomeza.pdf
    • https://s3.amazonaws.com/kezemiradigu/t_sql_2012_database.pdf
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_245be630c64e4a519789a42083cbed62.pdf?index=true
    • http://muzirovun.epizy.com/luletuwuwutubamalupuf.pdf
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_91dcbdf7c99d4da3a6ab905bb4f4e31e.pdf?index=true
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_0d7856392e8b491b9e344aaec9b698b9.pdf?index=true
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_bbc1f55443574a39b8e617c0f21c4ec3.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_off0000f6bc.bin
d1f372a49872c74d36f9c7890dae76a2adcbca2f85a95ead6e59d90e6660f0f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BC 4916 bytes
font_01_sfnt_off00010787.bin
5cfce72f85ba656b609a9fa85669f0b3158bf04ce5f6524ab086aa12ee903434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10787 10196 bytes

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