Malicious PDF — malware analysis report

Static analysis result for SHA-256 760bf04143f76336…

MALICIOUS

PDF

83.4 KB Created: 2021-03-23 05:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48b2a90f8644788307a59921546e09fe SHA-1: 5d8c38a333effb3c1741a27e00576f3916879bd6 SHA-256: 760bf04143f76336250772440d4687eaf8c6c22238fd06e25ea352407ac6c3e6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to printer drivers, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=hp+officejet+pro+8500a+plus+driver+windows+7+64+bit
    • https://cdn-cms.f-static.net/uploads/4487416/normal_601569baaf185.pdf
    • https://cdn-cms.f-static.net/uploads/4416656/normal_602a236ae46ec.pdf
    • https://cdn-cms.f-static.net/uploads/4458161/normal_6058d6fc4e7f7.pdf
    • https://cdn-cms.f-static.net/uploads/4368245/normal_602426489627c.pdf
    • https://cdn-cms.f-static.net/uploads/4423166/normal_5fe9cdbb52a37.pdf
    • https://static.s123-cdn-static.com/uploads/4506170/normal_5fe417927ca13.pdf
    • http://gosoxegekiri.mywebcommunity.org/pirogafa.pdf
    • http://rabevazilogu.iblogger.org/nabavulogurikupewugijala.pdf
    • http://memoxilebuse.22web.org/scroll_lock_key_on_logitech_wave_keyboard.pdf
    • http://dezunanerab.iblogger.org/eureka_math_grade_1_free_worksheets.pdf
    • https://cdn-cms.f-static.net/uploads/4377408/normal_601b8766ad2fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wofuxax.rf.gd/best_selfie_camera_app_2018.pdf
    • http://togipumenotu.epizy.com/48389173797.pdf
    • http://bifezuragumizi.rf.gd/ars_goetia.pdf
    • http://sivabesu.epizy.com/marginal_and_absorption_costing_income_statement.pdf
    • http://golokelu.rf.gd/world_war_1_map_quizlet.pdf
    • http://zotubune.myartsonline.com/accuair_e-level_touchpad_controller_manual.pdf
    • http://bewosekoxosegoz.rf.gd/97730913960.pdf
    • http://ximuxulizi.myartsonline.com/11490036350.pdf
    • http://mitufesidu.epizy.com/roland_barthes_death_of_the_author.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed86.bin
8a65114676f2fadc7c1398e42d03c6f0b13cdc9611049e2ab8b72a027abd23fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED86 6260 bytes
font_01_sfnt_off00010304.bin
2724218239351526f9c5a26c4ccaa3bc56ccf32b3ca35ce7651e0d86fc354636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10304 11060 bytes
font_02_sfnt_off000128d9.bin
4b39140c652e6d058fe59e0172338ed7e0b8c56e7cdf0ba82c6c8c4172db5d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128D9 16144 bytes

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