Malicious PDF — malware analysis report

Static analysis result for SHA-256 515155e2cc9c95bb…

MALICIOUS

PDF

74.5 KB Created: 2021-03-21 08:44:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 160280e27ed89d610ba9aadc5e4092fa SHA-1: d2407f0f76c2579094a8fb1d921c7b57b660d916 SHA-256: 515155e2cc9c95bb234880d6f268355619db732333f0ed3a16a2a1d3dccba1cb
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, identified by heuristics as an external URI and a potential phishing/malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=camp+chef+pellet+grill+beer+can+chicken+recipe
    • http://vizilirudigub.getenjoyment.net/sikefivujal.pdf
    • http://trastenmyqort.online/bixajigevase7r9w3.pdf
    • http://jefevivavifax.scienceontheweb.net/rheem_marathon_50_gallon_electric_water_heater_reviews.pdf
    • https://cdn.sqhk.co/kuluxasoge/m5ifjaB/lunoxet.pdf
    • https://cdn.sqhk.co/nexuliwadi/S4wjshf/last_day_on_earth_survival_ios_gameplay.pdf
    • http://fotubobuwenapu.scienceontheweb.net/naruwikefowumubifuduba.pdf
    • http://1cats.space/11th_step_nightly_reviewu2uge.pdf
    • https://cdn.sqhk.co/dunokufimove/gdnsLgj/sales_administrator_interview_questions_and_answers.pdf
    • http://vebuwovivulab.mygamesonline.org/africa_country_map.pdf
    • http://sowopezamiw.medianewsonline.com/why_does_jocasta_kill_herself_in_oedipus_rex.pdf
    • http://sodaapp.club/wejisanuwixerubiwid66vqh.pdf
    • http://remebetegekit.iblogger.org/wajiruwadud.pdf
    • http://xemizawufogutuf.scienceontheweb.net/tesame.pdf
    • https://cdn.sqhk.co/pinofizulag/dKjjx4M/anthem_of_heroes_cheats_ipad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dozuxix.myartsonline.com/barbara_brennan_hands_of_light.pdf
    • http://wogafut.rf.gd/bmw_usa_performance_parts.pdf
    • http://belibivizonojo.myartsonline.com/paguvepexogevapuwep.pdf
    • http://ledufowi.myartsonline.com/85594963134.pdf
    • http://judiserod.onlinewebshop.net/how_do_jet_engines_work_youtube.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_off0000e4d2.bin
ffc36795b13e59cb9b491cc6aaf18069b32f38962665b0abb0d9b5f5e0dfdbb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D2 5360 bytes
font_01_sfnt_off0000f6e3.bin
c7593a9e4fc9cbcb70f4153776c2495a27e1ddf4eac645f96dc3feb072a12464		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E3 11032 bytes

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