Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bac36402f66ad6…

MALICIOUS

PDF

64.1 KB Created: 2021-02-28 12:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a5e7244fdac27d754af60d1ef5da3969 SHA-1: 0487b298340ea1777a18c9d28765bb9122408946 SHA-256: 45bac36402f66ad6c9b4aacd8a060e2fd257bb650aa48082830797ba044778d9
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 attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest this PDF is designed to redirect users to malicious websites for credential theft.

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://pelibifir.ru/wb?keyword=my%20cloud%20home%20login%20wd PDF link annotation
    • http://opticsystem.website/star_wars_vintage_collection_stormtrooper_rogue_oneogexl.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/93675274501g2d20.pdfIn PDF document text
    • http://kernig.pro/modificare_file_gratis_in_italiano42thq.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/OibiaGo/4851389031.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/crossfit_games_workout_schedule.pdfIn PDF document text
    • http://wownatural.fun/90613811982l7a2g.pdfIn PDF document text
    • https://cdn.sqhk.co/migixurej/S8ijqjc/gameloft_classics_20_years_uptodown.pdfIn PDF document text
    • http://domainlimax.xyz/dokiwilefidazepubafiduwfnr2a.pdfIn PDF document text
    • http://keepxufi.space/google_chrome_all_versions_apkrxvq8.pdfIn PDF document text
    • http://return-0.com/74582091201ow76v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gitipelut/aladdin_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/free_fire_game_jio_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/25485338402.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/stock_ageing_report_in_excel.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/53223332975.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/mupezeronulirijug.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/31156699452.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/manual_del_propietario_chevrolet_spark_2011.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_off0000c013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC013 5068 bytes
SHA-256: 2bf1a32263955e6ef5c631527bcdeb6eb70567f8be894600f3f8f71601e3223d
font_01_sfnt_off0000d14d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14D 10024 bytes
SHA-256: 2d8f29d12da29bdd30df374bb216bc998ada5ad84c6c9994eb81d7c5debc6a9d

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