Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2ec67d9ea40224…

MALICIOUS

PDF

74.2 KB Created: 2021-03-09 08:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4932fa5c26360c3a392ce55f0777a083 SHA-1: e19af54166ce03254586ddcb7ab9e0f0ac9dfd26 SHA-256: fd2ec67d9ea402241efe2ba4729e9d37de08cefc63b860fd411423ec50f83bdd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to serve a phishing lure or download a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to downloading a PDF, potentially for SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=asme+b31.+3+pdf+download
    • https://cdn.sqhk.co/rojarasam/4ZYuXgc/tabud.pdf
    • https://cdn.sqhk.co/mulepava/1WbTGd0/top_speed_formula_car_racing_games.pdf
    • https://cdn.sqhk.co/wofikubid/AEgnYhg/sears_golf_bags.pdf
    • http://detonic-deutschland.website/the_over_40_hormone_reset_diet_review8xzcz.pdf
    • http://arnautmebel.ru/mastermind_rogue_5etg8pe.pdf
    • http://babbieshop.ru/nugumobozotq58l9.pdf
    • https://cdn.sqhk.co/tipadasa/i1N8JMt/blue_cross_blue_shield_federal_cob_form.pdf
    • http://optamorem.com/how_do_i_reset_my_hunter_xc_sprinkler_systemsl4sv.pdf
    • https://cdn.sqhk.co/xedaberetaj/60jbgct/xedolokitudeviri.pdf
    • http://mukidulutovig.iblogger.org/what_does_it_mean_when_your_charged_with_a_felony.pdf
    • http://milanbeach.fun/isometric_piping_drawing_software_freero771.pdf
    • https://cdn.sqhk.co/famuxina/aUp8Wjj/73829754236.pdf
    • http://goldstein.berlin/skyui_mod_configuration_menuudfot.pdf
    • https://cdn.sqhk.co/tixukiko/hajiZhb/monster_hunter_rise_trailer_analysis.pdf
    • https://cdn.sqhk.co/nuzinipaz/hbgfhge/cnc_machine_training_center_in_tamilnadu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/271739ca-e20d-49c7-a504-697a73bd850c/digaxe.pdf
    • http://toxukanubevaga.rf.gd/largest_law_firms_in_nj.pdf
    • https://uploads.strikinglycdn.com/files/6d18d4b6-3c0f-405a-8191-05bd1ed96e0a/west_bend_82707b_stir_crazy_electric_hot_oil_popcorn_popper_machine.pdf
    • https://uploads.strikinglycdn.com/files/6362bedf-ea3a-4758-a353-0e63587401a4/99934961015.pdf
    • http://sanubexudo.rf.gd/45057562001.pdf
    • https://uploads.strikinglycdn.com/files/a8910f65-77ff-41c5-8191-163ae4d50df4/powermore_engines_who_makes.pdf
    • http://tijunejo.epizy.com/ethiopian_reporter_amharic_version.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_off0000e48c.bin
7a40470936b7c4f1a0c2a52c30b39cd8fafd44ec40eab3572875f511b1f03cdf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE48C 5560 bytes
font_01_sfnt_off0000f77d.bin
0d066d6ed16a5ebf0c9397012b030b26fe2b98e8b5496d8e236a2d0b3f21d41f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF77D 10504 bytes