Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7c4c859318a1da…

MALICIOUS

PDF

78.2 KB Created: 2021-03-10 03:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4476dee79111ebaf089e88f2ad39bdf0 SHA-1: 21d6647647f792fc8f590f8bdd0c62d9b94202f4 SHA-256: ed7c4c859318a1da0d7112a692c662f1a7cd10de90b15f9b6112b97e67d9d23b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://pelibifir.ru/award?keyword=capitalism+and+freedom+milton+friedman+pdf
    • http://joxepubevi.22web.org/fbi_reading_body_language.pdf
    • https://static.s123-cdn-static.com/uploads/4466666/normal_6000fc36dab35.pdf
    • https://cdn-cms.f-static.net/uploads/4454432/normal_600acbf0b3289.pdf
    • http://texukajiz.iblogger.org/alpine_cda-105_aux_input_adapter.pdf
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5fdc10eee82e7.pdf
    • http://fumuroruzej.medianewsonline.com/tusavixebo.pdf
    • https://cdn-cms.f-static.net/uploads/4366055/normal_60478034443ca.pdf
    • https://cdn-cms.f-static.net/uploads/4469852/normal_6011a58e3d9e2.pdf
    • http://sevowina.medianewsonline.com/how_to_use_a_bosch_300_series_washer.pdf
    • https://static.s123-cdn-static.com/uploads/4403672/normal_6001e9d38c083.pdf
    • http://vuroxinizona.scienceontheweb.net/20548390931.pdf
    • https://cdn-cms.f-static.net/uploads/4459922/normal_6029b2da88a2b.pdf
    • https://static.s123-cdn-static.com/uploads/4464870/normal_5feb25ace59c3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3aa7d0e2-4256-4268-91fc-a35cf1a47e2c/how_to_adjust_ultegra_di2_front_derailleur.pdf
    • http://vabepevid.epizy.com/who_makes_evcon_furnaces.pdf
    • http://vilulew.rf.gd/fakuwix.pdf
    • http://sovuberexizizir.epizy.com/falconer_s_hill_infant_school_ofsted_report.pdf
    • https://uploads.strikinglycdn.com/files/88aa71e8-1005-4290-8379-e281773f0454/gegipobamekepar.pdf
    • http://luzarog.rf.gd/fiviravabutenanasanunig.pdf
    • http://fakupomajokiwe.rf.gd/assumption_of_cost_volume_profit_analysis.pdf
    • http://xugonowelimije.epizy.com/dasidapodefonop.pdf
    • http://nupadamemal.epizy.com/adaalat_2_episode_1.pdf
    • http://durunorutap.epizy.com/lumukaruvejikevuguwud.pdf
    • https://uploads.strikinglycdn.com/files/923d65c1-bade-4fd6-8078-16837efc5d79/deloserejevusonaneli.pdf
    • https://uploads.strikinglycdn.com/files/51847736-d244-4950-8089-c5b04875a749/mobonewuxened.pdf
    • https://uploads.strikinglycdn.com/files/e81b647f-473e-4b72-8162-710e291b06c2/pasafagapegirijakivugul.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_off0000f615.bin
846f2f0cccb16e284b2b2daf52ad8ef96dcac6d9cc03d95d446ea4a7c602a7a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF615 5092 bytes
font_01_sfnt_off00010747.bin
323bf90e023f6ec89f3a2219b47441b843a63e4da65fee55bbbe7e9770adaa4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10747 10456 bytes

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