Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d816961030ca50…

MALICIOUS

PDF

65.8 KB Created: 2021-02-15 22:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 9e6329440ed7bd777ef88236f0d953e7 SHA-1: ce9db4693619155fb3fadce3703f5d25d78d3103 SHA-256: 94d816961030ca50ccd1b1e61c6d6973f81c5c1d571a53563df5f191bb949425
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/wix?keyword=silver+models+new+york PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460233/normal_60164d87b5bef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469105/normal_5ff64e0b1f64d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447626/normal_602956b0462f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383561/normal_601272656893e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411931/normal_600170bea0455.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/LhhheaR/24201266936.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/ihgcxhe/zombie_city_defense_2_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/r8MHlia/wixubopeva.pdfIn PDF document text
    • https://cdn.sqhk.co/fitigeru/Vljc3RR/33930243904.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413113/normal_601d7364ca072.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC615 5180 bytes
SHA-256: 5d9107242ec493927b64b64fc20f2bc43894b0f6124504879f300c6a87d78b06
font_01_sfnt_off0000d7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B9 10256 bytes
SHA-256: 1ff17cc06c653f09ea32a69b9f8bcaffa897fcc5599392f85e691a4e9c7349a1

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