Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fafd258a87a2e8c…

MALICIOUS

PDF

77.7 KB Created: 2021-05-03 16:56:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 434367d23504faa5090600a4c73b8745 SHA-1: 74988fd4e150530dd9ec2f90c341573d71cb3dbe SHA-256: 7fafd258a87a2e8cbbf57324742f0e6ec171f82de245a3cfbe128f5a525cf7c0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=what+are+the+3+types+of+density PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447089/normal_5feb62c912074.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/ghicids/nikah_mubarak_dua.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491169/normal_600f596ead7e1.pdfIn PDF document text
    • http://dodajavux.scienceontheweb.net/aprendizajes_clave_quinto_grado_de_primaria.pdfIn PDF document text
    • http://tuzojexis.mypressonline.com/67806143590.pdfIn PDF document text
    • http://xejapuz.getenjoyment.net/fisioterapia_hernia_de_disco_lombar.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/39heehj/60448950428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383922/normal_6021a2f9562b1.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/23356376392.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fe18873d88a8.pdfIn PDF document text
    • http://wusozupu.mypressonline.com/badifovevov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449411/normal_6039798e945a8.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/posufij/army_dress_uniform_pinks_and_greens.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/response_error_code_417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bfb06f0-c72d-4346-b8da-a0b318939a69/fetobezuvet.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/how_to_order_my_license_online.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/vuzurimixogufobenugiralep.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/nekenasurosiwuterikezu.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/42361241146.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/75948792818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a708cb-4646-4f84-82d5-7c611ea82cc8/20983950755.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/20106015949.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_off0000f267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF267 5376 bytes
SHA-256: b7358226a657060b06f930ed5fa23e3806171883fea8a6a5759be1be2c002821
font_01_sfnt_off000104c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C0 10636 bytes
SHA-256: a54e573b1de5fa8e1da78689a4f403b5477c04333e8934db6efe02d23192351d

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