Malicious PDF — malware analysis report

Static analysis result for SHA-256 08145af2368a698f…

MALICIOUS

PDF

72.6 KB Created: 2021-02-17 09:55:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 631dccdf9ca46e0dd60fc4e1fd13040e SHA-1: bad4fc53e7eca0e075014334b32b028ae4c495b8 SHA-256: 08145af2368a698fe7cebd58a46ad33e7be77d94fe742641e9d9d32778e10441
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=verizon+plans+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470209/normal_601a1bf605b2c.pdfIn PDF document text
    • http://moresukko.ru/19051063386p4503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387411/normal_6017bfc070cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471948/normal_600e08f70c5bc.pdfIn PDF document text
    • http://spiritstudio.ru/37820680974dg373.pdfIn PDF document text
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/9cd6d2ac96542.pdfIn PDF document text
    • https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/5521978.pdfIn PDF document text
    • http://yogist.fun/jirubodomubobamurugil56yj.pdfIn PDF document text
    • https://pemogele.weebly.com/uploads/1/3/5/3/135324676/fatitovexexipal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497109/normal_5ffc02ba142a9.pdfIn PDF document text
    • https://cdn.sqhk.co/giruzegovu/6nfagd9/gizoxitisesariwe.pdfIn PDF document text
    • https://zodukaveg.weebly.com/uploads/1/3/5/3/135345947/nekep.pdfIn PDF document text
    • https://tigerabedudutid.weebly.com/uploads/1/3/5/3/135304069/jaduxir.pdfIn PDF document text
    • https://dikasawo.weebly.com/uploads/1/3/5/3/135349802/8bbb3b070.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_off0000e057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE057 5052 bytes
SHA-256: 9d522615e53b9e63c6290eab4a5a984956ea9028a027a8af2a9c66e24b8027f9
font_01_sfnt_off0000f19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19F 10572 bytes
SHA-256: c3ab3bf68b086e74651a72bdd8a58a2e8a1318d6e24a9bb3dd3906a84ef9c77e