Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8391c663fe6097f…

MALICIOUS

PDF

81.0 KB Created: 2020-12-19 00:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 84a4db35a0b25fd8eb43910f3b2e2623 SHA-1: 73fed9a0e7edecfe4c694e5ecdaff28bf1c42383 SHA-256: d8391c663fe6097f99d0897497686800b1d9c254164677a49ab61c39d5e105ca
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site, disguised as a movie search result. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing lure designed to redirect users to a malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=boondock+saints+2+movie+online+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f9319a6df395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481423/normal_5fb9892635efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421207/normal_5fbd0a065cc01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470821/normal_5fdae878f2bf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5fc56ca02838f.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/perurulexi/gapigupavulakizoninigu.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/zazovukoropavuxetejarewis.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/california_yellow_immunization_card.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/point_lookout_md_fishing_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/73587719667.pdfIn PDF document text
    • https://s3.amazonaws.com/medadele/bumitasonomomubevodapav.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/97807631464.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36eb77848ba205d28ae0c/t/5fc490ce3f75b16643661485/1606717647227/meditations_in_an_emergency_frank_ohara.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_off0000ff46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF46 5472 bytes
SHA-256: da68b3e0a7f5ca67c4f28858793c0df8552117abba52e8d517a4a55ebc4a20f9
font_01_sfnt_off000111de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DE 11056 bytes
SHA-256: a2338fb98667be876a719603587f4e1da1c475c8cbf427f7e7fce9f5c499e8e8

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