Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bce8ca04b98977…

MALICIOUS

PDF

125.4 KB Created: 2021-03-17 10:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd264d52728b75a7d3d6190062b646b9 SHA-1: 91ea8a2f45cf2c2ef04ed8c4a238af74e5f6b5b0 SHA-256: e3bce8ca04b98977fee857174385ff48ac72b448e0db1e7eb6b6f4e598f8fae8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'kuzutuzo.ru' suggests an attempt to redirect the user to a potentially harmful site, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://kuzutuzo.ru/strik?utm_term=option+trading+strategies+pdf+in+hindi
    • https://cdn-cms.f-static.net/uploads/4366382/normal_6021cebbeece0.pdf
    • http://sijemogezabusa.sportsontheweb.net/cosatto_zoomi_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5fdaeb5feb5f5.pdf
    • http://tamawasobo.sportsontheweb.net/81193570044.pdf
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5fdefe7431bca.pdf
    • http://mofobawosenej.mygamesonline.org/artificer_ua.pdf
    • http://pigigozoruda.mypressonline.com/46366566983.pdf
    • https://static.s123-cdn-static.com/uploads/4451756/normal_5ffb92100e995.pdf
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5fd77d6112ca0.pdf
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6012334c046e7.pdf
    • https://cdn-cms.f-static.net/uploads/4475577/normal_604344652e2f3.pdf
    • https://cdn.sqhk.co/baresupujar/dhgifgx/15893600620.pdf
    • https://cdn.sqhk.co/nefikelifu/fjehcgS/detailed_project_report_format_for_commercial_building.pdf
    • https://static.s123-cdn-static.com/uploads/4384048/normal_5ff9c1719081f.pdf
    • https://static.s123-cdn-static.com/uploads/4460950/normal_5fdf89f9a7778.pdf
    • https://cdn-cms.f-static.net/uploads/4418401/normal_5fdaaee80743d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/f801a48a-c13d-4413-9de5-a76dcfb7ed04/ganamanud.pdf
    • https://uploads.strikinglycdn.com/files/707efcd5-3938-413e-8e58-cab81ec46193/mobenezonov.pdf
    • http://gumusimigogasuz.onlinewebshop.net/73869217645.pdf
    • https://uploads.strikinglycdn.com/files/f84a64e9-6a9f-4327-977f-d3c41de95a6c/79732583614.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001559b.bin
5de6b0d232ad876d44fe599ff217cef5dd2585956514ef9ca1294d0c54b1af9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1559B 5088 bytes
font_01_sfnt_off000166d7.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x166D7 3720 bytes
font_02_sfnt_off00017239.bin
5ddab704ec9b54a492d77e6e5b25230d9edbe46b1b2f454d929f1523de030e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17239 9840 bytes
font_03_sfnt_off0001942f.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1942F 16164 bytes
font_04_sfnt_off0001a944.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A944 4324 bytes
font_05_sfnt_off0001b746.bin
c6fb1ca30e91872f61939f79837985315eac6c3549d710a95b5bfc13d0e6ba51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B746 16708 bytes

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