Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce04f0c7b572d363…

MALICIOUS

PDF

85.8 KB Created: 2021-03-15 17:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d8c0b7e7905ba2c420fc4cab5ffcb7b SHA-1: 80fa5f4bf4ea87ba2c93ba4be9176a4df1638b53 SHA-256: ce04f0c7b572d3632c3b5599aa6f47189abc546496261d7eb5db61ba97c9f58e
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, 'xezojetit.ru', which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'music school brochure'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/award?keyword=music+school+brochure+pdf
    • http://roramog.iblogger.org/61319700742.pdf
    • http://xobaxibudizoba.22web.org/classroom_objects_worksheet_esl.pdf
    • http://salimom.mygamesonline.org/78578674906.pdf
    • http://ruguxod.iblogger.org/84775758357.pdf
    • http://zatutajijiti.getenjoyment.net/telecharger_dictionnaire_anglais_franais_gratuit_larousse.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a8b9cbba-a35a-455d-b67b-7132a62868e2/12574899561.pdf
    • http://wutesejib.onlinewebshop.net/91623821078.pdf
    • https://uploads.strikinglycdn.com/files/00880e02-94cc-4721-b1a1-d09801e21837/pafomuzik.pdf
    • https://uploads.strikinglycdn.com/files/be5dd983-435b-423b-99e9-d35f180bff52/what_to_cook_in_a_rice_steamer.pdf
    • https://uploads.strikinglycdn.com/files/6ff24cb4-b429-4461-8ad5-06afb2f803d7/star_trek_beyond_cast_ensign_syl.pdf
    • http://dekutob.epizy.com/yahoo_mail_apk_for_windows_7.pdf
    • http://kaveled.epizy.com/1404236812.pdf
    • https://uploads.strikinglycdn.com/files/74423c49-4818-4764-bd28-8e34c46e74b1/denojiwenokimokani.pdf
    • http://degepedafapuf.epizy.com/88787014020.pdf
    • http://nuxidowu.epizy.com/joxatilisizapipak.pdf
    • http://xuresiru.epizy.com/11352716671.pdf
    • https://uploads.strikinglycdn.com/files/834b09a9-f599-490f-a444-81a0f5d6f5d8/how_to_disassemble_dyson_dc59_motorhead.pdf
    • https://uploads.strikinglycdn.com/files/180bbd6f-5535-47f0-8a73-34101f5c5b44/givojosakenasefex.pdf
    • http://guzumirofega.epizy.com/acceptable_forms_of_voter_id_in_texas.pdf
    • http://vaxomuterok.epizy.com/givirakilara.pdf
    • http://luvugotanufulav.epizy.com/64193402552.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104ee.bin
17a4056b3df6799c24cfa58e9452f973b860be0da29941dca9f6cf57f764516f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104EE 4876 bytes
font_01_sfnt_off0001158b.bin
dcd775d39cf21c624f2f2f7506459b646725ed7adc9ffd9b254d120021e54c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1158B 11184 bytes
font_02_sfnt_off00013bd5.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BD5 4324 bytes

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