Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf15620c952aa82…

MALICIOUS

PDF

76.4 KB Created: 2021-03-20 18:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cc3e9395ec507c9c33437e7ca58d4a5 SHA-1: 43e098f8604f14eb9f1a89c8aa7fa14eab7daffd SHA-256: 2cf15620c952aa82c6d1b4230eba7a138ec989c79fcd943a7f42965835f9c262
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a payload. No scripts were extracted, but the presence of external links and the phishing-like content suggest a social engineering attack.

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://ponafet.ru/award?keyword=superhero+bulking+program+free+pdf
    • http://plsale.pro/firobafijubavutamepefilajab.pdf
    • https://cdn-cms.f-static.net/uploads/4374847/normal_603c66f0e8a7f.pdf
    • http://fitatuvepejozo.sportsontheweb.net/87599921245.pdf
    • http://everydayy.fun/julia_child_mastering_the_art_of_french_cooking_vol_2cvwi6.pdf
    • https://static.s123-cdn-static.com/uploads/4367656/normal_600215b4421a2.pdf
    • http://tatuvidara.iblogger.org/can_i_add_apps_to_my_xfinity_x1.pdf
    • http://item-get.top/13939238826smzef.pdf
    • http://batut.space/que_tipos_de_funciones_de_lenguaje_haye30t3.pdf
    • https://cdn-cms.f-static.net/uploads/4462059/normal_5fd7b85cddb1f.pdf
    • http://tuwasukam.getenjoyment.net/sinhala_bana_katha_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4443610/normal_603d2cbbbe9e0.pdf
    • http://kusadelopo.iblogger.org/fovulobekuzopifoduv.pdf
    • https://static.s123-cdn-static.com/uploads/4374022/normal_5fed69a43d6d4.pdf
    • http://jukofokunazevam.iblogger.org/nofupusiwalunutuwuwudu.pdf
    • https://cdn-cms.f-static.net/uploads/4421330/normal_6054ebed22bd7.pdf
    • https://cdn-cms.f-static.net/uploads/4446401/normal_60358189e9146.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xujiwusa.epizy.com/hindi_alphabets_pronunciation_in_english_download.pdf
    • http://dudawugir.epizy.com/what_is_computer_operator_and_programming_assistant.pdf
    • http://wutopow.epizy.com/pabotetojoz.pdf
    • http://fobexegedun.epizy.com/manualidades_con_papel_iris_paso_a_paso.pdf
    • http://wudazebej.atwebpages.com/porter_cable_fn250b_finish_nailer.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_off0000e946.bin
b3d2b1f1daade970662421bf65b1b30bd8780d89a7a18b1975bbb73252bb830b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE946 5584 bytes
font_01_sfnt_off0000fc16.bin
4af936768e5b6238615f5e5333f0d422d839c63addbe175da903fd24eaf40e29
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 11700 bytes