Malicious PDF — malware analysis report

Static analysis result for SHA-256 658e4c048a379089…

MALICIOUS

PDF

75.0 KB Created: 2021-03-18 11:27:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f313e669bc58d37c8f9a598bd72b960a SHA-1: e3a30837832679a157c84142500b5d6df9451ca6 SHA-256: 658e4c048a37908915f366e71597f88520c9e7fb6b8d325cbb983eafe0b31bd2
104 Risk Score

Malware Insights

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

The PDF document contains a lure related to "color by number addition worksheets halloween" and an external URI pointing to a suspicious domain. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent, likely to trick the user into downloading a payload. No scripts were extracted, but the presence of embedded URLs and the overall context suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/123?utm_term=color+by+number+addition+worksheets+halloween
    • https://cdn.sqhk.co/zezinojox/7uagdMM/mystic_messenger_707_route_chat_times.pdf
    • http://wipunemobak.mygamesonline.org/fezofupititepujud.pdf
    • http://zukirudon.mypressonline.com/wodumeme.pdf
    • http://jegepev.22web.org/whatsapp_business_app_new_version.pdf
    • https://cdn.sqhk.co/raduvonudo/aIhi1jh/crystal_geyser_water_analysis_report.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/interstellar_main_theme_sheet_music_patrik_pietschmann.pdf
    • https://s3.amazonaws.com/wajufifenoxuj/beyond_oasis_genesis_manual.pdf
    • http://sukijikulo.epizy.com/parallelogram_properties_worksheet_answers.pdf
    • https://s3.amazonaws.com/gedexim/keurig_2.0_use.pdf
    • https://uploads.strikinglycdn.com/files/ca6ca226-45dc-44dc-a618-2ba9b2f41fa0/sijinevamet.pdf
    • https://s3.amazonaws.com/sabegokek/xutiputirasef.pdf
    • https://s3.amazonaws.com/vuterijoze/54607166268.pdf
    • http://zaduzos.myartsonline.com/download_adobe_reader_exe.pdf
    • http://votemajaw.epizy.com/plotting_linear_graphs_worksheet_tes.pdf
    • https://uploads.strikinglycdn.com/files/8f6961f0-d563-4edb-9c63-4446ddcbab60/can_flavored_condoms_cause_uti.pdf
    • https://s3.amazonaws.com/datarofapakil/the_unofficial_guide_to_radiology_chest_abdominal.pdf
    • https://uploads.strikinglycdn.com/files/939908d5-1eeb-47d8-83f2-ab21ec4c21e5/nofutuwinawowuvutujogezi.pdf
    • https://s3.amazonaws.com/fadadedezeker/mopekesedug.pdf
    • https://s3.amazonaws.com/xapota/dokumexuxoba.pdf
    • http://wamebebubo.rf.gd/jack_reacher_full_movie_stream_free.pdf
    • https://s3.amazonaws.com/fejatepudopito/siemens_hackerearth_test_questions_and_answers.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_off0000e974.bin
be0a144a0de69f06b4b039da4f8c6f21b4f3b09a23d1ed524d0d3ff017b70238		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 5368 bytes
font_01_sfnt_off0000fb96.bin
257d55663a6ea3de32fc87b38578865cfc56489112d0f7213e7794c7c06d4be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB96 10056 bytes

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