Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f65ea2605557a43…

MALICIOUS

PDF

74.6 KB Created: 2021-02-23 21:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6bb1440c105f8f48b4dae2d7b98f64d8 SHA-1: d8112c8b63e6ab7c898b4cda50a11fd87248fd92 SHA-256: 0f65ea2605557a43c0efcaf132069c56a0fdbb962e93458607041e55d8f1fc5b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. 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 user curiosity and lead them to a malicious site.

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://leonvi.ru/strik?utm_term=how+to+connect+hmdx+speaker+to+iphone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484623/normal_5fcaf8ff8584e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479223/normal_5fc8eef29f289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408983/normal_601e01dbb4a16.pdfIn PDF document text
    • http://discount50.pro/791934126533aaa2.pdfIn PDF document text
    • http://fsbsiod.com/69166153612kgwd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421778/normal_5ff849478ae5f.pdfIn PDF document text
    • http://azorocheat6.xyz/gapagexhwhtf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_5fd6452abe5b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467005/normal_5fcdefa6a44b8.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/kavalukato/65699095841.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/74653209175.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/21469689012.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/capitalised_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/vejufupitasasew.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_off0000e51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51B 5464 bytes
SHA-256: 47378bd82a4be44e21a6684892abb6b7aa504fe6f316af1a161752c025802227
font_01_sfnt_off0000f798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF798 11276 bytes
SHA-256: 7dcc879c5cb057af773a18d3e56d942ea979c8ec887c895142a5dc7c62add0fd