Malicious PDF — malware analysis report

Static analysis result for SHA-256 396729f6de2c7573…

MALICIOUS

PDF

81.8 KB Created: 2021-02-23 06:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c7b2ec4c9ff07e9827b00f58b4da2fe9 SHA-1: e6866c5f568034dfbca4b8f57bdd92ad22f47a83 SHA-256: 396729f6de2c7573089bb1db4adc7071573c3d7ccf0fedaccae06fd9b2e0df03
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'Bosch integrated dishwasher manual'. The primary IOC is the external URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/wix?keyword=bosch+integrated+dishwasher+manual+pdf PDF link annotation
    • http://firstreadersclub.com/cisco_anyconnect_secure_mobility_clikyq9o.pdfIn PDF document text
    • http://fineagencyy.com/medamuzadigemokasaps8kea.pdfIn PDF document text
    • http://hookup757.fun/98353821805fqwdw.pdfIn PDF document text
    • http://eeeeeyyy.space/murder_mystery_2s4r8o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416811/normal_5fd2238824d00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_601e67eb48ea5.pdfIn PDF document text
    • http://adv-workshop.site/ribaxewugefudenetufusoljjple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452376/normal_6003f4f977752.pdfIn PDF document text
    • http://store50off.info/90919568133twja9.pdfIn PDF document text
    • http://rezltml.xyz/bhalukpong_weather_reportk0t2d.pdfIn PDF document text
    • http://netekigupi.22web.org/palesukebu.pdfIn PDF document text
    • http://premiumpornclips.com/software_project_cost_estimation_templatej4ydz.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/tiduro/i_a_maron_calculus_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/vuguzudekiposi.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/jewogogixapujuzulofafuto.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/pugudasak.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/add_and_subtract_fraction_word_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/gamugibekeposezokesosu.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/41402699030.pdfIn PDF document text
    • http://pebeminozari.epizy.com/sewapifakulevemigupizabeb.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/getuvoxufuzizirivemawikud.pdfIn PDF document text
    • http://kojaburu.epizy.com/25855414035.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/zovidanudaboxijaw.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_off00010144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10144 5712 bytes
SHA-256: 1aed5bca97f23776ed6a542390d58153e4557960ba47be054332b75984d55217
font_01_sfnt_off000114a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A1 10844 bytes
SHA-256: 66a82091bb9bed70488d64cc282e9ba37263d377ca14d683cad8761687c32c12

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