Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f64a56528ba3b4…

MALICIOUS

PDF

75.8 KB Created: 2021-03-19 06:37:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4f832da11afe8b196673ded3d260f7 SHA-1: 9a1ccb2abd17ce3b3b25d91ff0a83ce35dde5243 SHA-256: 63f64a56528ba3b4c9b67331bbf506d213852548a14cd190c12853bd8835ccc8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://nipisod.ru/wix?keyword=mark+1+40-41', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/wix?keyword=mark+1+40-41
    • http://kefudepoduwudi.sportsontheweb.net/yamaha_arius_ydp_143_manual.pdf
    • http://dofujifeluradep.medianewsonline.com/valkyrie_profile_walkthrough.pdf
    • http://zanovekolasin.mywebcommunity.org/honda_ridgeline_transmission_fluid_change_interval.pdf
    • http://vomamafawib.scienceontheweb.net/xowabadajixo.pdf
    • http://xibawolafubiz.getenjoyment.net/tunafaxakexosofaliwarumi.pdf
    • http://lagulesuko.medianewsonline.com/95800210345.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e7f45dcf-1957-410e-85b1-216e85a225c4.filesusr.com/ugd/a2c2bc_8001eea41d7e4af6b7f1edb2edf7acc1.pdf?index=true
    • https://5e54d98c-4257-4cc7-9010-48f3df296eb2.filesusr.com/ugd/05240c_ef93c2dc3e5d438995d6b72a9b0df10a.pdf?index=true
    • https://s3.amazonaws.com/mefonevimimix/wegazunezonoworuxen.pdf
    • https://s3.amazonaws.com/remeranexe/angular_viewchild_template_variable.pdf
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_4fccdc2bf74e48a9bc31f320fe1d11ec.pdf?index=true
    • https://uploads.strikinglycdn.com/files/aa8ff47a-def1-4d6f-a343-4b5503df68cd/troy-bilt_storm_2410_2-stage_electric_start_snow_blower.pdf
    • https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_eb4f9687a30549e980a0cb5a839b5543.pdf?index=true
    • https://s3.amazonaws.com/defujo/epa_national_primary_and_secondary_drinking_water_standards.pdf
    • https://uploads.strikinglycdn.com/files/27409a11-0d88-4ed0-ad25-5d783e353be5/how_long_to_cook_sweet_potato_wedges_on_grill.pdf
    • https://s3.amazonaws.com/xojafemori/81291731048.pdf
    • https://s3.amazonaws.com/popisiburewixuj/employee_id_card_template_publisher.pdf
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_cc57d709a1e34c9b81a81b5880acee32.pdf?index=true
    • http://kesupipipiret.onlinewebshop.net/articles_exercise_with_answers.pdf
    • https://1ac5d900-0c69-4f12-8b1d-4e209472b8d2.filesusr.com/ugd/828753_26c52881537a4ff38bb36552b96e0aca.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8a8edd44-0b6e-44c2-ab51-0109b346a7cd/how_to_get_coca_cola_kit_fifa_21.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebdf.bin
d96b9ae444240cf4b7373f02d055f2fad7ab8100a04db8a9c19385dcaf4fe18d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDF 4852 bytes
font_01_sfnt_off0000fc88.bin
dd43e0e0a7fe9c1b712bade0fa5bb3c129b54d355e79bd911b8f37d349b64c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC88 11136 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.