Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eae79c658efa31c…

MALICIOUS

PDF

115.0 KB Created: 2021-03-18 07:18:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 677b14bd2249ec46f746a22c2a4db509 SHA-1: 7b5cc86ddbc5d18bf156086f0170fb0569c14786 SHA-256: 6eae79c658efa31cb1042375200231ddea4544cd8c0b3d38e6ad33201d41175d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for educational content, likely to trick users into downloading further malicious files. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of external URIs suggests an attempt to redirect the user to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/award?keyword=cambridge+igcse+computer+science+pdf+download PDF link annotation
    • http://dozixolabizije.iblogger.org/personal_social_and_emotional_development.pdfIn PDF document text
    • http://goproits.com/difference_between_project_and_program_management_pptie7tk.pdfIn PDF document text
    • http://specrazreshenie.com/transformer_sizing_calculation_chartiotju.pdfIn PDF document text
    • http://xunidar.iblogger.org/vuvibadirivevutupesibum.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/gdpr_data_protection_policy_template_uk.pdfIn PDF document text
    • http://rasiride.22web.org/favorable_ime_report.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/ancient_greece_map_quiz_printable.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/doxifuba/bivinagepowosugafumaw.pdfIn PDF document text
    • http://nilixedenoxim.epizy.com/venorizutudegewivosidi.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/nufarepepamekagavarinezox.pdfIn PDF document text
    • http://milazadizuwi.rf.gd/37647668221.pdfIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_31ab1d04819a49d5acbfc6f302d61549.pdf?index=trueIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_1ffc5489be784c02a4e50a0fb57a4391.pdf?index=trueIn PDF document text
    • http://zuwopun.rf.gd/easy_home_budget_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/kabituvesivetizajakevu.pdfIn PDF document text
    • http://dafiwogi.rf.gd/atomic_and_molecular_physics_lecture_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/76334986378.pdfIn PDF document text
    • https://bac325b5-3710-4a60-ba01-c1ac5e8a7650.filesusr.com/ugd/c111de_be03a465ab0849608a9f513b600d7b38.pdf?index=trueIn PDF document text
    • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_8c1f6b2c878c429680e49bb299c14952.pdf?index=trueIn PDF document text
    • https://3e1ae61b-6b68-46dc-8a90-d1c7a5b9f91c.filesusr.com/ugd/b8bbd7_3c3b36f8877b48778a0671e2c4fc53b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fezenur/wirikapojidewopokurode.pdfIn PDF document text
    • http://nununad.myartsonline.com/tissot_t_touch_connect_solar_release_date.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000180c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180C0 5612 bytes
SHA-256: 6e730581cd1ab2aed4bb58fe1807a40a3dccac348ced5f83a22df595473ef37b
font_01_sfnt_off000193c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193C4 12780 bytes
SHA-256: 57ce8f4d71650ce55579ded658db40df2bd5108f5ce1938ffdbf21e8e5678164

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