Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8cb03d09dc0897…

MALICIOUS

PDF

79.5 KB Created: 2021-04-21 10:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b5701381834a2c3baff1ca462dd336e SHA-1: 279dca356732945e31711374401b96555161f99a SHA-256: bb8cb03d09dc089779c0d9af890e10e497e508791221ea194c5ab7e724f08342
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI 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, contains keywords related to search queries, suggesting a lure to trick users into clicking the malicious link.

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://kuzutuzo.ru/strik?utm_term=cuisinart+keurig+descale
    • http://idealslim-ordina.site/evil_dead_part_2_full_movieaub2j.pdf
    • http://fitness1.space/friday_night_stock_car_racing_near_meoaj7z.pdf
    • http://vnds-v.website/average_speed_singaporeymi2r.pdf
    • http://yoganchik.space/vovikedifesupaxapipivutpsrgr.pdf
    • http://fitit.space/zakidoofqsc.pdf
    • http://jixelaxoli.66ghz.com/lunuwegages.pdf
    • http://net-klientov.ru/what_are_advanced_microsoft_word_skillsbvkxu.pdf
    • http://meetsalon.xyz/24344609665aw56f.pdf
    • http://paypallsecurity.com/xezekapodisimonosapuwomo6yxvv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://numedopebapeke.rf.gd/calendario_mensal_novembro_2020.pdf
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_892456cf239445af9272226d582c6988.pdf?index=true
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_c30aaf0bcbd744b1bbf79862b1c9a7e1.pdf?index=true
    • https://51956041-da35-40aa-96c1-085c1f47c80d.filesusr.com/ugd/e6e573_50f59cc88e964060bdd269cf5ee17719.pdf?index=true
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_5d3abdad858e4e5dabcbbbba7c74c1d2.pdf?index=true
    • http://lixugojobipiwof.epizy.com/kenateru.pdf
    • http://regipikiwubadov.epizy.com/93524559268.pdf
    • http://sefepovenux.epizy.com/invention_definition.pdf
    • http://wabelat.epizy.com/jetime.pdf
    • http://sujidise.epizy.com/38915289636.pdf
    • http://diwomikutaz.epizy.com/39394326976.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_off0000fa3a.bin
352f708a96b82b7914290ffec02c0f33f67a82ea4f2f45f989b6d8376cb9e4ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3A 5076 bytes
font_01_sfnt_off00010b8b.bin
ed0edc0a89bf03bad25b1957f375fa4bc7ff05819111c8b6db54194590336e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8B 11032 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.