Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef28b7da1e74afb…

MALICIOUS

PDF

158.1 KB Created: 2021-03-25 08:25:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: aa02f89e0974dd741ca84d6554c3e0a6 SHA-1: 0320503bb99e22530eb2f7242dbf5fad1ddff5bf SHA-256: cef28b7da1e74afb83efbc3a1cddfea4b833126e477c41e52c4d267221ccb9d8
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an external URI pointing to 'https://druttle.ru/wix?keyword=rosa+parks+essay+meme', which is likely a phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' further confirms its malicious nature. The document body, though heavily obfuscated, suggests an attempt to mimic search results or content related to the keyword.

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://druttle.ru/wix?keyword=rosa+parks+essay+meme PDF link annotation
    • https://lelobetiladafan.weebly.com/uploads/1/3/4/4/134497055/wenigep-gukajelis.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzipogowita/ibGKjhp/arena_cobra_ultra_goggles_best_price.pdfIn PDF document text
    • https://lezuzanufebaj.weebly.com/uploads/1/3/4/8/134873312/zilazupafo_fosuxe_lafevigojo_gebexenegumevu.pdfIn PDF document text
    • https://xupufofi.weebly.com/uploads/1/3/4/7/134766196/xamuginazifi_tevubob_lesivesufaxum_vosuxexonabo.pdfIn PDF document text
    • https://cdn.sqhk.co/wufotubi/hdZIgiv/friends_international_cambodia.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/4390059.pdfIn PDF document text
    • https://cdn.sqhk.co/reparepoki/hjjh558/poporuxutexojujolemeg.pdfIn PDF document text
    • http://zemesod.getenjoyment.net/fevamopukemex.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxefoxo/gigd2T8/kavunopakuzupevajiki.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/romulos.pdfIn PDF document text
    • http://resokipuga.getenjoyment.net/40686881595.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/fovezewi/46682361747.pdfIn PDF document text
    • http://tujisagozepiwon.epizy.com/anna_karenina_bangla_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/android_snackbar_tutorial.pdfIn PDF document text
    • http://xofawuriduk.epizy.com/34763756957.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/electrical_engineering_mcqs_free.pdfIn PDF document text
    • http://diwukimip.epizy.com/high_school_series_and_parallel_circuits_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/new_bangla_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/pdf_to_word_converter_paid_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/idsa_fungal_guidelines.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21B34 5104 bytes
SHA-256: acb390d8e522d98add8b7182555725642f64ce9b70f6f47cc9bec302503761e1
font_01_sfnt_off00022c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C8F 11888 bytes
SHA-256: a93c2138609074b63f55b1f5a8441d6462d7595bf0528ec31cf45d1e0eeec6ad
font_02_sfnt_off00025539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25539 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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