Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27e119bdd213b34…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 05:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6a076d481349d86d6e21d46153054499 SHA-1: b055af634c95bcbe255ee8fe56d8de8b22365ee4 SHA-256: b27e119bdd213b34354e6a4186d587ca1c4739dcadb1dae9117d9809f9581dea
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/award?keyword=arduino+ide+serial+port+greyed+out+mac PDF link annotation
    • http://vevaxogejaz.scienceontheweb.net/how_to_use_the_super_snark_tuner.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/jj6nkkv/61225467625.pdfIn PDF document text
    • https://kutikeso.weebly.com/uploads/1/3/4/4/134490414/witif-xiwod-jazawoji.pdfIn PDF document text
    • https://ludubilataso.weebly.com/uploads/1/3/4/7/134719947/nikijital_semagiwedifuz.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/igicZgc/lowebiju.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/xiwonuwidezilidiborazoga.pdfIn PDF document text
    • http://jesofazom.iblogger.org/allianz_global_assistance_insurance_claim_form.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/Wshbhge/pudeko.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/first_alert_smoke_and_carbon_monoxide_detector_test.pdfIn PDF document text
    • http://nijovilof.iblogger.org/vevosisimofum.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/1702439.pdfIn PDF document text
    • https://mavipevawifuduv.weebly.com/uploads/1/3/4/5/134598931/disikabulofijurapoba.pdfIn PDF document text
    • https://bilugejedegigel.weebly.com/uploads/1/3/4/0/134017605/b6ad38.pdfIn PDF document text
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/15c97e1822.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/p54gisi/2476625783.pdfIn PDF document text
    • https://cdn.sqhk.co/wubukuxivupe/Pgf1iem/52950188360.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/nepal_constitution_day_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusapovewazigu.onlinewebshop.net/list_of_218_phrasal_verbs_translated_in_french.pdfIn PDF document text
    • http://duvodix.myartsonline.com/percy_jackson_sea_of_monsters_chapter_12_summary.pdfIn PDF document text
    • http://fosoxubap.epizy.com/58462421957.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 5484 bytes
SHA-256: 64b7d58d67277d1c504288b310d132a9abc10b5ffcfdd19e459f9cda884571da
font_01_sfnt_off0000f1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E9 10468 bytes
SHA-256: c85a4875c4e35163a229738ab5103e87f7d012a5bd4f1aba24793a50be7c5d5f

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