Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad76af6dd2d64e89…

MALICIOUS

PDF

69.1 KB Created: 2021-03-23 16:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f0abdddd4cec140500e076c6f28fb0fc SHA-1: 1fecafff8c357445c107f06ab58e95b539ee937e SHA-256: ad76af6dd2d64e894ad9497e58da3b3bfbe27909da918b9075bfe3c227926c5c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a PDF document, aligning with the 'Pdf.Phishing.Trojan' detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://mezovuduw.ru/strik?utm_term=pobre+ana+chapter+4+pdf PDF link annotation
    • http://vulefuxudonad.22web.org/communicative_functions_of_language.pdfIn PDF document text
    • http://qwertyujg.xyz/88940311085w3r40.pdfIn PDF document text
    • http://meetporte.xyz/38174694796kopko.pdfIn PDF document text
    • http://accueilcmb.com/vuvunuwajajdu4.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/30693797165u5y4j.pdfIn PDF document text
    • http://securityverifiedservices.com/zuwanagurojumobemavew7uo5.pdfIn PDF document text
    • http://mafaregasinuviv.22web.org/quantum_leap_tv_show_episode_guide.pdfIn PDF document text
    • http://vitrinachel.ru/49817313910i8mg6.pdfIn PDF document text
    • http://idealica-italiaofficial.site/what_causes_my_maytag_dryer_to_squeak2g8fe.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/can_a_honda_eu2000i_power_a_refrigerator76eya.pdfIn PDF document text
    • http://habercigo.com/susalujiwogegisovusixummvzlu.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/kaxukok/how_to_program_xr15_remote_to_soundbar.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/ejercicios_diagramas_de_clases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5fbeffa-e307-4bf2-a01f-6df8cbd6104a/ma_drivers_license_renewal_covid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9febb2fa-6eb6-43b9-bc05-31ee11df8fb0/epson_v370_flatbed_scanner.pdfIn PDF document text
    • http://rudurugineme.epizy.com/clear_acrylic_sheet_menards.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/kannada_bhajan_songs_free.pdfIn PDF document text
    • https://f1ddcea9-c323-452c-a4d3-aaefec61e50a.filesusr.com/ugd/defd8a_643f91a486be40d3aab5a6c817e8ee11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bejexe/gabiwufarejumozofi.pdfIn PDF document text
    • https://46ebecaa-9490-439b-bba6-ee77f1a6ca93.filesusr.com/ugd/cee8a1_4197b8a38f4c48819f1b43afc0e3b144.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_e8f15cf48ac6471a9b49e9577e4195a9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65d0575-99c1-419d-b060-26f6307d7386/sapugodemogot.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/how_to_learn_chess_app.pdfIn PDF document text
    • http://panafinuniro.epizy.com/jacoco_coverage_report_empty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c026bd68-a231-4893-b876-45406fead13e/sawolupikugatuborabob.pdfIn PDF document text
    • http://nisepekana.rf.gd/atfl_sprain_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aed4c4e-f188-4d2b-b3cb-5d5458cd9513/skywalker_12_trampoline_replacement_pad.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_off0000d10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10D 5260 bytes
SHA-256: 94cf0a78dc83d9f97c90d9e69f1c42061dfc41c1a728cc6cd10a303aded68dd7
font_01_sfnt_off0000e2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EB 10224 bytes
SHA-256: 7fee5f7362a956c9ce3222cc66c1f2a7a802548ef92bafa0cfa21a90f727a55c

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