Malicious PDF — malware analysis report

Static analysis result for SHA-256 9234ffeaeb7b2180…

MALICIOUS

PDF

65.3 KB Created: 2020-11-11 02:57:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f43206876694662de51140eb291c04a9 SHA-1: d3e11aa28ed9c72e721a580c3100b999d19cf8e5 SHA-256: 9234ffeaeb7b2180e05ae79af37b08123a5ecf6d62fe1dbf41aab6acc8b342ba
96 Risk Score

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 0.9998

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://traffnew.ru/123?keyword=easy+calculation+mean+calculator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446270/normal_5fa45d1a50aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f99cdaabef5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410015/normal_5f997963b85bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446759/normal_5fa6519fccb1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7850734-ed53-43a6-b49a-ed78bff9a5df/numukepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/951b3f9d-6b42-48cd-9344-54243c962701/xosugadanole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef516453-f4f0-42d8-aeac-d679dfd8a4af/revowojeduzugukigufepe.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/google_adwords_certification_answers_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/16207394435.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/bunavugu.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/barnett_vortex_hunter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/11599830296.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/alphanumeric_symbol_series.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_off0000c43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43F 5004 bytes
SHA-256: 0d5a1e4d9abc9f5bcd10556bbe619209ced37eef634b062aa3cd75e49ed3dece
font_01_sfnt_off0000d534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD534 10412 bytes
SHA-256: 18670dfdcba6a25dfc4a35275daac2b6f8b0f5bc3e81714d692177d6bb019ab1