Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb978cb597c889eb…

MALICIOUS

PDF

70.3 KB Created: 2021-05-13 07:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d3e38bfb444d9730477ff007f30472e SHA-1: 7f7c874e9a25f78387e33e5a27fd505832eec3c9 SHA-256: bb978cb597c889eb4b3ec37d8b46b8fb17968260aebb57463009ea5cf6c3ed4c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or credential harvesting. The document body, though heavily obfuscated, appears to be a lure related to a search query, directing the user to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=is+billy+elliot+on+netflix
    • https://cdn.sqhk.co/siduniberame/4Humrja/hot_uk_deals_golf_shoes.pdf
    • https://cdn.sqhk.co/litonesi/mShh8ji/zapopifuweturafelozefobe.pdf
    • https://cdn.sqhk.co/talulofofexa/zgjhiji/epic_games_launcher_linux.pdf
    • http://gelumagiz.iblogger.org/formula_for_finding_volume_of_different_shapes.pdf
    • https://cdn.sqhk.co/gizivapejoko/djiiijh/last_minute_cruise_deals_from_southampton_2019.pdf
    • https://cdn.sqhk.co/morureju/hetjc25/megalodon_storm_rc_australia.pdf
    • http://zagejudivavi.sportsontheweb.net/ashirvad_borewell_pipes_price_list_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kebenubes.onlinewebshop.net/agrarian_structure_under_mughals.pdf
    • https://s3.amazonaws.com/libosokune/tuvukonudivaxila.pdf
    • http://rowujerofinofek.epizy.com/18158752098.pdf
    • http://tosabukevosubar.myartsonline.com/louisiana_literacy_test_answers.pdf
    • https://uploads.strikinglycdn.com/files/69c8aae3-d642-47ed-b5b4-ef65a8d69b70/79422034652.pdf
    • https://uploads.strikinglycdn.com/files/a5ca28d8-d65e-4246-a012-875635d34acc/tojuzumifosag.pdf
    • https://uploads.strikinglycdn.com/files/971165fa-8aad-4d81-aabe-99f5c8353fb9/administracion_de_medicamentos_via_sublingual.pdf
    • https://s3.amazonaws.com/folexapurilowe/crash_course_world_history_haitian_revolution_30_worksheet_answers.pdf
    • https://s3.amazonaws.com/titugome/small_bakery_business_plan_sample.pdf
    • https://uploads.strikinglycdn.com/files/ad7555f6-fbfb-41b9-90e1-f5c10b467500/61121729722.pdf
    • https://s3.amazonaws.com/buxoparadazegu/broadcom_driver_wifi.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_off0000d681.bin
90abae5b32441b2a4c1af66759a9283faeac3dc50f9dc9bd39d779c862542007
pdf-font-stream PDF embedded font (sfnt) at offset 0xD681 4704 bytes
font_01_sfnt_off0000e6a8.bin
f2aabe36bfbd2535004326723b5897bfc47431cc5e18c5f7d174709d892f3d10
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A8 11188 bytes