Malicious PDF — malware analysis report

Static analysis result for SHA-256 05454d9130e74b5e…

MALICIOUS

PDF

109.7 KB Created: 2021-04-26 07:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 848a7583389e88c2ac323d0a3b3509be SHA-1: 9825ce143ebc46e8bd7714f1f9472a6fac7f706b SHA-256: 05454d9130e74b5e985e07b61da98841c3ade8c8aafb8c67c4a90a2352900434
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or credential harvesting. The document body, though heavily obfuscated, suggests an attempt to disguise its malicious intent, possibly as a loan application or similar lure.

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://jacksth.ru/strik?utm_term=javascript+location+absolute+url
    • https://cdn.sqhk.co/ketejeti/jfCwChh/poxujek.pdf
    • http://sitajejo.22web.org/icici_bank_mudra_loan_application_form.pdf
    • https://cdn.sqhk.co/laligujove/gYmuifI/cinema_4d_r16_plugins_free.pdf
    • http://futamubizobov.iblogger.org/programmer_analyst_resume.pdf
    • https://cdn.sqhk.co/mesojofu/hhdjhjg/57783086515.pdf
    • http://jidudilubad.mygamesonline.org/linked_list_program_in_c_download.pdf
    • https://cdn.sqhk.co/moserusoba/pD3Abie/witozenapa.pdf
    • https://cdn.sqhk.co/vatuliwa/gceidbr/jewish_historical_museum_cafe_amsterdam.pdf
    • https://cdn.sqhk.co/kefekawit/j1ORBhi/bundt_cake_recipes_dairy_free.pdf
    • https://cdn.sqhk.co/nojedajoze/chghc5y/linear_relationships_and_bivariate_data_worksheet_answers.pdf
    • https://cdn.sqhk.co/rogapakaler/GgcRhjn/kodobuxutarifez.pdf
    • https://cdn.sqhk.co/muzedikerum/mw2gejj/angry_birds_transformers_latest_update_mod_apk.pdf
    • http://bajifepeselok.sportsontheweb.net/analytical_skills_exercises.pdf
    • https://a:[email
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xegefonupekowa.epizy.com/zoterukomasuso.pdf
    • http://bodirinukamole.onlinewebshop.net/tapiboguga.pdf
    • https://uploads.strikinglycdn.com/files/d4c22159-02e0-400a-9dda-a4af667937a2/83453295363.pdf
    • https://uploads.strikinglycdn.com/files/bfd74686-5043-4e10-ac88-f884e35f65e5/64978540112.pdf
    • http://xasuwuf.epizy.com/organic_chemistry_test_bank.pdf
    • https://uploads.strikinglycdn.com/files/887b96d9-cc97-4322-83dc-360e0de16f6f/mito_y_realidad_mircea_eliade_resumen_capitulo_1.pdf
    • https://uploads.strikinglycdn.com/files/6eda5cc5-d79d-4de2-b285-e969371abf51/63704295095.pdf
    • https://%CF%80.example.com/foo
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b29.bin
53a2e957a5738a1b8e90e4d37e512d3e88133e02d7c825a0d9f1de3ebdb9cc35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B29 4408 bytes
font_01_sfnt_off00014aaf.bin
c298c5037a0aacbfa3bfc2c12531b449730336a97cf24e91ca68614fc7efdc6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AAF 5116 bytes
font_02_sfnt_off00015c2e.bin
d7a3d0f063af0fe5f892ea0dab128b0e3dc93c682f7d60f7b565cc679b7a875f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C2E 17836 bytes
font_03_sfnt_off000193ad.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x193AD 16204 bytes

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