Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7b7b996334e9db…

MALICIOUS

PDF

70.6 KB Created: 2020-11-10 08:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b4ff5663ddbff16d7985e0ab1aab3d32 SHA-1: 1ef46af0f124f856ebc3a75e4f9c48757f803343 SHA-256: 2f7b7b996334e9db96ab1494ff2aa196c8f904479ee4ca1af43f248e375a84f3
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a phishing site disguised as a retirement planning spreadsheet. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?keyword=best+free+retirement+planning+spreadsheet PDF link annotation
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/89c232b487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_5f9b9a59e2a58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403282/normal_5fa8e20d313aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5f94df8616934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f9521534382a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5f979cca3a9a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f9fa8bd28dff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5f9aa5fbdfe4c.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/7546b668-c03a-4651-8686-56104909b749/sefisubodove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282df314-0d32-4970-882d-1888e127643c/lubigaxejunabom.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_off0000d5fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FA 5504 bytes
SHA-256: 5e3886d21126bc9ecbf739379a36b894ad8aec51ca4fcf8bf86946dcebdcf402
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 10832 bytes
SHA-256: a87b465672de57ec5292025bf9e74b02df755f13f33b4ab007f75d5733100430

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