Malicious PDF — malware analysis report

Static analysis result for SHA-256 b199c48001919e03…

MALICIOUS

PDF

76.9 KB Created: 2021-03-19 20:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3594b7f2807967c016d7fc7e2f5f9e57 SHA-1: 110cff0662fe2efa2365fdb796aa1479a5850a6a SHA-256: b199c48001919e0376d4dc99136c968260afab2aca9924e889ea28460c055a43
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious URL, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this document is designed to trick users into visiting a malicious site.

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://pelibifir.ru/strik?utm_term=how+to+reset+electric+rv+hot+water+heater
    • http://potusowo.22web.org/the_allyn_and_bacon_guide_to_writing_seventh_edition.pdf
    • https://zabodoxukuxubar.weebly.com/uploads/1/3/4/9/134904472/1150313.pdf
    • https://cdn-cms.f-static.net/uploads/4492529/normal_602c1e732ed06.pdf
    • http://janipuwibir.mywebcommunity.org/739166453.pdf
    • https://wisejagu.weebly.com/uploads/1/3/4/8/134881465/kuzivabatoxadexawolu.pdf
    • https://vamotavobepud.weebly.com/uploads/1/3/1/4/131438348/fixopibeduzowu-degobilotamomo-feminaxupufeji.pdf
    • https://cdn-cms.f-static.net/uploads/4447253/normal_602ad464b19b1.pdf
    • https://vosuzupitozom.weebly.com/uploads/1/3/5/3/135313705/dusuji.pdf
    • http://fudazozotakaxal.mywebcommunity.org/23336933065.pdf
    • https://static.s123-cdn-static.com/uploads/4498702/normal_5fc71edbc8f6a.pdf
    • https://gubagomokugexat.weebly.com/uploads/1/3/3/9/133988684/liwoputedose.pdf
    • http://jotusimemirido.sportsontheweb.net/rudoxogimarotaradogolep.pdf
    • https://musokuvezuref.weebly.com/uploads/1/3/1/8/131871850/fopizimoxo.pdf
    • https://cdn-cms.f-static.net/uploads/4446647/normal_6033bd93cac13.pdf
    • https://static.s123-cdn-static.com/uploads/4467612/normal_5fe447252a4e2.pdf
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/tetawilefonofopep.pdf
    • http://gaxenop.medianewsonline.com/pimezetaximebujoduri.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/biwuwukesazef/20662156785.pdf
    • https://s3.amazonaws.com/magapeguwabe/resumen_del_genesis_biblia_catolica.pdf
    • http://ruxabuzavejar.epizy.com/pokemon_emerald_guide_apk.pdf
    • https://s3.amazonaws.com/neviwove/telugu_new_songs_ringtones_free.pdf
    • https://s3.amazonaws.com/sefiwegegagu/mesebutovejejufeve.pdf
    • https://s3.amazonaws.com/bubisifapagefe/wezuvitedilatu.pdf
    • http://kikevanalujik.rf.gd/how_to_print_using_hp_deskjet_2135.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_off0000ef59.bin
910ef67b55cebfac57f94d5f3bdd7ea81b0a24e26fd4a489ab81fc0cdfecb37d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF59 5000 bytes
font_01_sfnt_off00010069.bin
8a1fb11ef871e9775e781b75bd3b79de90ef47449aa0e45c6eda98594dbbbbec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10069 11032 bytes

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