Malicious PDF — malware analysis report

Static analysis result for SHA-256 817e1edb1d5c2324…

MALICIOUS

PDF

83.1 KB Created: 2021-03-15 06:23:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e81e8a13a8e1e867c4b96fb365f71398 SHA-1: 5a110de39451fb7b338c788e1a5fe69d0e8f1a86 SHA-256: 817e1edb1d5c2324e1a9557fd86af3592f0a6fb1eb5330f2610fb3f692aab6ee
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, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, contains text that appears to be a lure related to an "image list".

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/strik?utm_term=fishman+aura+spectrum+image+list
    • https://cdn-cms.f-static.net/uploads/4454820/normal_6048956907dbf.pdf
    • https://cdn.sqhk.co/ramejolir/Vihibji/gudokubovezexidixuxo.pdf
    • https://static.s123-cdn-static.com/uploads/4404308/normal_5ffe19443e7a6.pdf
    • http://tuguxanofa.iblogger.org/dopanurigudututenubanason.pdf
    • https://cdn-cms.f-static.net/uploads/4482403/normal_6032114c8442f.pdf
    • https://cdn-cms.f-static.net/uploads/4368989/normal_603a4002b6fcb.pdf
    • https://cdn.sqhk.co/gumakulex/ghcrZW1/le_management_des_entreprises_artistiques_et_culturelles.pdf
    • https://cdn-cms.f-static.net/uploads/4420927/normal_5fd2efb70a407.pdf
    • https://static.s123-cdn-static.com/uploads/4477629/normal_5ffdb10f61110.pdf
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5fd2028324a8d.pdf
    • http://fovajifep.iblogger.org/einstein_biography.pdf
    • https://cdn.sqhk.co/leporolino/iJ5hjFJ/wallpaper_love_heart_break.pdf
    • https://static.s123-cdn-static.com/uploads/4447252/normal_5fcd882c0a323.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rirusozo/tabletop_rpg_gaming_accessories.pdf
    • http://pimorem.epizy.com/25124389069.pdf
    • http://furubaja.epizy.com/rikema.pdf
    • http://xeladijigaw.epizy.com/81874099885.pdf
    • https://s3.amazonaws.com/dazinibonofobi/student_registration_form_css_template.pdf
    • https://s3.amazonaws.com/zalisujezajaje/banner_template_photoshop.pdf
    • http://mirijevedot.epizy.com/zafutolalukitoxedogageka.pdf
    • http://kakogajoxe.epizy.com/wotedago.pdf
    • https://s3.amazonaws.com/faluzotixupi/ap_studio_art_concentration_questions.pdf
    • http://boxemoje.epizy.com/gemunezupasetasupedeta.pdf
    • https://s3.amazonaws.com/vunizi/41937973773.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_off0000f736.bin
951ded69f064f0aa6e7e99e055801dcdc26af6e3f2b5a33699d5853997ffef5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF736 5072 bytes
font_01_sfnt_off00010845.bin
86f5956602aa2963adc62d56541afa7d176c2e9f31c2c5ee0f932a17d19891ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10845 11920 bytes
font_02_sfnt_off000130ab.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130AB 4324 bytes

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