Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c069391dbc5fa71…

MALICIOUS

PDF

69.4 KB Created: 2021-03-25 00:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edbdb7eff4952fb523ee70bfedacc642 SHA-1: d4f541079884615c21b79911117d2afc6a3c5359 SHA-256: 8c069391dbc5fa7167782617e80dc87519afb116ca8dac5c9c324ae6da760758
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a payload or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit vulnerabilities or trick the user into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/award?keyword=photosynthesis+vs+cellular+respiration+worksheet+pdf
    • http://nazhivy.net/kowebeziredubaff9vk.pdf
    • http://savupubib.22web.org/lixudegexalufilivadat.pdf
    • http://natfreshik.fun/counting_philippine_money_worksheetsogb8l.pdf
    • http://bodipok.getenjoyment.net/lean_canvas_business_model.pdf
    • http://dmgameplan.com/dnd_3._5_bookspgvbm.pdf
    • http://lofarado.iblogger.org/68743155948.pdf
    • https://cdn-cms.f-static.net/uploads/4403685/normal_603673ce11115.pdf
    • https://cdn-cms.f-static.net/uploads/4422893/normal_600e508af08cc.pdf
    • http://rimka.xyz/poker_odds_calculator_excel_spreadsheetzodnu.pdf
    • http://alphabitx.com/fomokiziwuvamuzudofaabeay.pdf
    • http://tehnotop.site/51284530102n2goe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jadere/99779072617.pdf
    • https://s3.amazonaws.com/midizaxopazeji/bombay_dyeing_double_bed_sheets_sale.pdf
    • https://s3.amazonaws.com/miwolezedubujoz/vebadora.pdf
    • http://bavatesivo.myartsonline.com/49948158254.pdf
    • https://s3.amazonaws.com/tevomenil/midsummers_night_dream_script.pdf
    • http://pisibagavorinow.epizy.com/street_fighter_3_android_free.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_off0000d46b.bin
111cd66a2518060d6cc539da77d01e79b29edbffdedd93f7a2e2c4dfa5b28c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD46B 5560 bytes
font_01_sfnt_off0000e76c.bin
ca15226acdcb681371c499800f15c9837db99d08fef7ed4075900eeed56fa674		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE76C 9832 bytes

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