Malicious PDF — malware analysis report

Static analysis result for SHA-256 729a8bd91cdbed7b…

MALICIOUS

PDF

90.0 KB Created: 2021-06-16 02:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f19344572b82ad8fd8d2ccf28ea648 SHA-1: 5c8354a456bc973778867eb0a885f4dc49af05b4 SHA-256: 729a8bd91cdbed7bbf401644399205bf67d23550b17787da3debc8fdbbd2aa52
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to a suspicious domain, combined with the document's metadata suggesting it's a generated PDF, strongly suggests it's designed to trick users into downloading further malware. No scripts were extracted, but the overall structure and URL indicate a phishing or malware distribution attempt.

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://cructi.ru/uplcv?utm_term=juggernaut+method+2.0+pdf
    • http://csc025.com/userfiles/file/20210608091857_0ffi19.pdf
    • http://zetrade.cz/userfiles/file/13539625997.pdf
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8c26e4f61---11183397431.pdf
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/554a345cb5831f7c0cd7df52866aeec3/81989740568.pdf
    • https://master-service.ro/images/file/gefuvolova.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160758dd2849ab---renitazafowevekasarovube.pdf
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/4iljdml8d220ek6u28v4skfk5d/ximepogibiganuruwipejevo.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e55f909a69---rimexarinazoka.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb92732e01---37879489170.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/313bb539483e3633afd0c3e2b78edd25/30181498949.pdf
    • http://hieuchuan.com/upload/files/xidumonafosepudugefam.pdf
    • https://aonetreks.com/uploads/file/bagudidokajasunudona.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/38d2877865d5552405f78a9f433a6847/zonob.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160a1e727db95d---97184669925.pdf
    • http://interel-rus.ru/test/sites/default/files/file/zuvovuparizo.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd7f46d763---fuximezatunidozize.pdf
    • http://am-assets.com/aom/magnolia/userfiles/file/75652894560.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off000123cb.bin
9443e273d74b078eeb68ec5db92f387790c6a9fad74ecc19ae7ca5466c14e564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123CB 5540 bytes
font_01_sfnt_off0001367e.bin
9ab425214f12eb4bbdd2561d1fdeefc1ff6d6329503f255bcbad1565c6f92bde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1367E 10828 bytes

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