Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e405865d81c826…

MALICIOUS

PDF

74.5 KB Created: 2021-03-26 06:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0814c8f32ffe5638551060f6426ad0c4 SHA-1: 91d8d5261b957da95d50e405b67945664f188b96 SHA-256: a8e405865d81c826de7a89c9e906c4364bbaf0760ceb570e6b82bd26b300c8eb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/award?keyword=amazing+fantasy+15+pdf+descargar PDF link annotation
    • https://cdn.sqhk.co/dodanadofu/ThcloKk/nielsen_total_audience_report.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/icmt7ji/armored_car_robbery_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/Sjhggvs/54630409892.pdfIn PDF document text
    • https://cdn.sqhk.co/fakupavod/g4hcgdC/insecure_direct_object_reference_prevention_cheat_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/fowijuseziju/eqWnhjY/lokexevusawegijoluzi.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/vjfwjbG/rocket_royale_apk_mod_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/rjhYghd/kart_racers_2_switch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisunajupanege.rf.gd/online_editor_freeware.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/zivewufozijutizevub.pdfIn PDF document text
    • http://didefiwofiko.rf.gd/calorie_calculator_for_fruits_and_vegetables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e7b918b-d9a6-4c7c-b398-e63a0da9c71c/recording_king_serial_numbers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c790eb27-40cb-47ac-9aed-e9ae103e0435/why_my_spectrum_remote_is_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/69145986466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4acb56c-a8be-4582-9637-0ac8918138b8/gojajes.pdfIn PDF document text
    • http://mujujum.epizy.com/briggs_and_stratton_snow_blower_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8977c2a1-6469-4e19-8f59-7ca73e4f6446/98019538251.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee593ee-31f7-4378-aef1-77984d01a4d0/1606789256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed4d383b-5c00-42a0-a55f-37fafd80a906/4887296810.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/how_do_i_turn_on_airplay_on_my_yamaha_receiver.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/rofonilafanuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebbb067f-a087-4f3a-ae2a-532606d4a28b/99413464808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9efc0c4-e169-40ce-8570-bec887d63f41/bofupevogaxezeke.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_off0000df98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 5760 bytes
SHA-256: d24133cbb7607325536364033f3e9002888e1dbf66d28d8577995bfc0c375a0e
font_01_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 11944 bytes
SHA-256: c4743d6c2d874432b49aeea104e5d003a7cfeec9b8be463493d33f42daa33b44

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