Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ed123c58824ed8…

MALICIOUS

PDF

99.2 KB Created: 2021-03-01 00:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 24f46318d47a036d50efac25a67cc96c SHA-1: 87191783375068c71ebb7cf4834b1f82756e7981 SHA-256: 06ed123c58824ed813b19b8f4b005007d581dde9bd86be223208e25a65ecc02f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://mezovuduw.ru/wix?keyword=teacup+yorkies+for+sale+in+joliet+illinois', indicates a lure based on search terms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/wix?keyword=teacup+yorkies+for+sale+in+joliet+illinois PDF link annotation
    • https://fikamuvereza.weebly.com/uploads/1/3/4/7/134754658/888e8fbba138.pdfIn PDF document text
    • https://mogoribomos.weebly.com/uploads/1/3/4/2/134266362/e49ebb7.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwuwigo/hgggXdR/99746463053.pdfIn PDF document text
    • https://sukanoxe.weebly.com/uploads/1/3/1/4/131453950/gonesosexufobo.pdfIn PDF document text
    • https://cdn.sqhk.co/gazamara/xn4hcja/78184739021.pdfIn PDF document text
    • https://sozazoje.weebly.com/uploads/1/3/1/1/131164180/bijumadananati.pdfIn PDF document text
    • https://pegufozexak.weebly.com/uploads/1/3/5/3/135317465/6c619c7a507bd.pdfIn PDF document text
    • https://kokezixunilo.weebly.com/uploads/1/3/4/0/134096179/mofebetibopu.pdfIn PDF document text
    • http://teenagetutor.online/xazugefaswgg12.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/vonutavekip/midland_gxt_walkie_talkie.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/19457815711.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/pastor_chris_oyakhilome.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/pipozamokigutufepo.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/how_to_improve_mobile_signal_at_home_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/guxik.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_off00014822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14822 5200 bytes
SHA-256: 141f48699a3778037804c228be5102203e20c5a7743d079d5b0121c059eed282
font_01_sfnt_off000159f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F6 10996 bytes
SHA-256: cb8cb3c49b6ea4e5a3fd7c716fad402576b8d20554a29438c15563b7855bfabc

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