Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cbe34744ab6388…

MALICIOUS

PDF

90.5 KB Created: 2021-03-22 03:24:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd484289144ff36f3f428c2dad25917a SHA-1: 7839b95eb7066bb273f3d1e346f852b765770bad SHA-256: 94cbe34744ab6388912a96d10ea45a85cdc8c11a8e458ac0b8e502a5075d5e2e
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, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely used to host or deliver the malicious payload. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=journeys+practice+book+grade+4+answers
    • https://jonomivebotuw.weebly.com/uploads/1/3/4/6/134683751/2c1bfe5f75a6b.pdf
    • http://eurofamily.pro/grange_park_primary_school_telford_ofsted_reportmefve.pdf
    • https://jugurapofan.weebly.com/uploads/1/3/4/3/134339640/xojarekumejutanepil.pdf
    • http://rbqjkwklnd.xyz/40256636631kd3ia.pdf
    • http://tebapewulodafe.getenjoyment.net/what_is_the_significance_of_the_golden_candlesticks_in_the_crucible.pdf
    • http://tapagigozi.medianewsonline.com/karogexagevisodibivufir.pdf
    • http://price-list.moscow/los_amo_familia_translationuc6pc.pdf
    • http://parkingtest.xyz/auto_root_tools_v2._47_pcxd75p.pdf
    • http://dlkmvkoenv.info/shimano_ultegra_di2_dura_acel3j21.pdf
    • http://mikrotikwizard.com/ending_film_maze_runner_3dl6md.pdf
    • https://kazirevuteguzug.weebly.com/uploads/1/3/2/6/132681824/1932166.pdf
    • http://kokilubowo.22web.org/volume_booster_windows.pdf
    • http://trikotoria.ru/jolesiriruh62w4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dirulibas.onlinewebshop.net/jaredido.pdf
    • http://teropisarazo.myartsonline.com/68485847528.pdf
    • http://fidikaxano.myartsonline.com/zeneneruzukupudurozuj.pdf
    • http://kefebewo.rf.gd/charismatic_movement.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_off00011fb4.bin
c7734734ee21d4fe92ec5c36f47377fe1488979d039d9785c9faf27f3fb04c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB4 5684 bytes
font_01_sfnt_off00013338.bin
116bbbf658dd1dfe1ffb5511d67693f6350a6d5d08da3fca4e7b5ea4a05dd8df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13338 11768 bytes

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