Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9673f23dd8c1e69…

MALICIOUS

PDF

81.0 KB Created: 2021-05-11 23:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 6b92d7ef95a522531dd06c05c065c071 SHA-1: d5d837e1a26b273c7492828815cff9ed855990f2 SHA-256: d9673f23dd8c1e69df334bccd721bf8ff5730b3e8072b7202080b39ba0de7d4e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a 'Sony str-k660p manual portugues'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=sony+str-k660p+manual+portugues PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375887/normal_6047fa676dc89.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/c3gGhjx/kamufono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475866/normal_60171e95707c9.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/zQhakX9/dirt_bike_racing_games_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/gjiShda/68960907467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411682/normal_60609fe2ae247.pdfIn PDF document text
    • http://pekefosijemibi.sportsontheweb.net/kirinexikifi.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/zerozumu.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/c4ihQ4c/skate_dice_skater_xl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_6024fe8c70e3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_6037943a1c234.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/vinivuxo/gilorubapuda.pdfIn PDF document text
    • http://nisogifamesada.epizy.com/natewemetot.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/how_do_i_adjust_the_hardness_on_my_water_softener.pdfIn PDF document text
    • http://wuwusawoviwu.rf.gd/malayalam_literature_quiz_questions_and_answers.pdfIn PDF document text
    • http://risakimo.epizy.com/82164001372.pdfIn PDF document text
    • http://papilumovojulez.epizy.com/bookkeeping_basics_for_small_business.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/alexa_app_fr_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/limevodefiwum.pdfIn PDF document text
    • http://zapofekeba.rf.gd/nexesakitobedatopevigaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/21858386163.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/91441224011.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_off0000f520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF520 5736 bytes
SHA-256: 4ecf02e417bb11a8e9275c91669effd1b892761c3b0f0a0d103f8b764a4c8048
font_01_sfnt_off000108a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A2 13916 bytes
SHA-256: ab474ec07110570c3addfe1dea721b569b396a429ac485038b2fa94554c4a0a8

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