Malicious PDF — malware analysis report

Static analysis result for SHA-256 7423d9464b580981…

MALICIOUS

PDF

82.8 KB Created: 2021-04-26 15:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ff2fd7e3d83e63f46c14e28ac43a43a7 SHA-1: e945204efee65954fa246789dbde119a580ce9bf SHA-256: 7423d9464b580981ea2a7b82a2ea4b9d1e1beb07109e38c108d340595b895c8b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'soxebez.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a movie synopsis, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=the+secret+movie+2020+synopsis PDF link annotation
    • http://kuvesukide.iblogger.org/andhra_pradesh_district_map.pdfIn PDF document text
    • http://help-service-support.com/wugidowidegixogatkto5.pdfIn PDF document text
    • http://vuzisebepuda.iblogger.org/amebiasis_tratamiento.pdfIn PDF document text
    • https://cdn.sqhk.co/sebuwemid/hEiege7/lexilavap.pdfIn PDF document text
    • http://shopsmmv.site/what_are_the_three_estates_calledo8wye.pdfIn PDF document text
    • https://cdn.sqhk.co/pidenali/JfhjjcK/photos_apple_tv_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/ghhhSbU/xikajukamoxuvezuti.pdfIn PDF document text
    • https://cdn.sqhk.co/xinefegepe/dgjJigQ/25176524629.pdfIn PDF document text
    • http://grenkasalo4.xyz/mcgraw_hill_accounting_answers_chapter_6o3p3i.pdfIn PDF document text
    • https://cdn.sqhk.co/nakoxofo/jjptnaX/gapojepegafowetor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lokijuronig/wijaxedotitelutibo.pdfIn PDF document text
    • http://sumawimibodi.rf.gd/77109789418.pdfIn PDF document text
    • http://maderenefozido.rf.gd/99645459824.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/chitralahari_telugu_movie_songs_now.pdfIn PDF document text
    • http://zumuwojik.rf.gd/fapukumotagasaximimazu.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/zoo_animal_worksheet_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/87075653342.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/40_year_old_virgin_unrated_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/geometric_formula_integral.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/1683763513.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/doxulubatewakesavizojokow.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/59032063933.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/what_is_rhetorical_structure.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C0 5104 bytes
SHA-256: 0d629815e8d45eb7cb148029fd4cdadf8eb4355fd114d7a23cbcaf697037e452
font_01_sfnt_off00010903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10903 11140 bytes
SHA-256: 8e3e15d9ad32cc7ab38bc23efb54e0aab647f59a7295433b5e8f0b24bddf9e0c
font_02_sfnt_off00012f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F31 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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