Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e0739049f21965…

MALICIOUS

PDF

85.8 KB Created: 2020-12-15 14:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4f260e65b011f59390323244855c1e18 SHA-1: 2adfb77c6870b54f5afd844a09dec35794a18273 SHA-256: 08e0739049f21965d4bf42f8a420790cc6b70d2e3e271cea26fc430f1a85dd94
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://traffset.ru/123?utm_term=oak+ridge+library+book+sale'. This URL is presented in a context that mimics a library book sale, suggesting a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect the user to a harmful site.

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://traffset.ru/123?utm_term=oak+ridge+library+book+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387825/normal_5fd30039ded16.pdfIn PDF document text
    • https://muwudenejudazo.weebly.com/uploads/1/3/4/6/134677543/wodurumiso.pdfIn PDF document text
    • https://murikupa.weebly.com/uploads/1/3/4/4/134481598/067212.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/6247399.pdfIn PDF document text
    • https://mokoluwi.weebly.com/uploads/1/3/4/5/134595511/sawajesipu-wuxarerowixabu-joridevuneliv-wufopidaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc27d7511f6a419848fbf13/t/5fd17381871f8c6e595170b0/1607562114420/pogefogo.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/dexter_blood_splatter_gif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0a5b00f7af3919d54e0a/1606224475789/ge_microwave_jvm7195skss_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/chikki_mukki_song_masstamilan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceae0ef4da4f68a3280d21/t/5fd6d29cc4373837b91c2646/1607914143367/genetics_by_b._d_singh_free.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_off00010fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE2 5324 bytes
SHA-256: 3b2c8f45d079221f6a825530f5357b8d5312bed997de1c3a6b3a877f684cd0e9
font_01_sfnt_off00012210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12210 12248 bytes
SHA-256: 1aa4312179d4945305890783288a11200af7473157b73da225ca1522164fea5b