Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebc88896f3a279e…

MALICIOUS

PDF

99.7 KB Created: 2021-04-08 03:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 115e567b16c6a7093681d79745bfd3a7 SHA-1: 9aced052765cc0c99c3bf0e21fb987b92dca900f SHA-256: 4ebc88896f3a279ec45f840aa29c39aa04529416f2385290d55d46abd1cb1457
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. An external URI pointing to 'https://xezojetit.ru/wix?keyword=park+athletic+supply+allen+park+mi' was extracted, suggesting this is the primary attack vector. Although no scripts were explicitly extracted, the PDF structure and embedded URI strongly suggest a phishing or malware delivery attempt.

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/wix?keyword=park+athletic+supply+allen+park+mi
    • http://xawexusinuzo.22web.org/xiwofixupusasoma.pdf
    • https://cdn-cms.f-static.net/uploads/4501996/normal_606cc71bf00d4.pdf
    • https://cdn-cms.f-static.net/uploads/4388596/normal_606d209742ba4.pdf
    • https://cdn-cms.f-static.net/uploads/4466673/normal_600a3b89a0e02.pdf
    • https://cdn-cms.f-static.net/uploads/4366405/normal_606552942322d.pdf
    • https://static.s123-cdn-static.com/uploads/4467601/normal_5fcd5a2ccf7ef.pdf
    • https://cdn-cms.f-static.net/uploads/4407810/normal_5fe74c474fe58.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/widuxade/fenamidakatefi.pdf
    • http://robabaxagolelez.rf.gd/bardic_performance_5e.pdf
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_47adcc1426e24db7b01734064e6d7ee5.pdf?index=true
    • http://jurukukixinom.rf.gd/zosasajurazumulez.pdf
    • http://litofafowiralo.epizy.com/37831712860.pdf
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_861b9605b0b44022ab305c27df90e841.pdf?index=true
    • https://s3.amazonaws.com/gedesisumi/xanuduzizebaguja.pdf
    • http://jopiwutipav.epizy.com/kuvajif.pdf
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_299d77b33f714e28ae1b7daabe9ffd0f.pdf?index=true
    • https://s3.amazonaws.com/womirofop/bipop.pdf
    • https://s3.amazonaws.com/sorapobuk/mavosoxaninunupobiwigut.pdf
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_fa5840da49d747a5957e279899c66a11.pdf?index=true
    • https://s3.amazonaws.com/xiwevitox/74226307476.pdf
    • https://4541bc1c-e35c-4de3-bb44-1f53c3e1a56d.filesusr.com/ugd/68f66e_6330f34880b44f16be83fe634fc199b0.pdf?index=true
    • 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_off0000e877.bin
eb264eb9ce53b834776044a4202864461a4f216c98c4145ab9316b443216df35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 31820 bytes
font_01_sfnt_off00014a8a.bin
46b58d603662b8be014dea50b07733d61672b671b0130e2fc5ac1bbb11120c63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A8A 5340 bytes
font_02_sfnt_off00015c95.bin
5448ffd011e5d97a0e90edd956a4f280271b44e761b0a67c2d490f5cd5e8ce9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C95 10684 bytes

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