Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f73edf39fa590f…

MALICIOUS

PDF

78.8 KB Created: 2021-02-12 14:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a416d1f1f2291cf702640196834dcca7 SHA-1: c8ceeb5bfa0619b7fb15c80b4a9cd29d631de3dc SHA-256: e3f73edf39fa590fd03a8850f701b89e06e0c4ef427697abf48689df9a31af2e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=notice+of+association+of+counsel+federal+court PDF link annotation
    • https://cdn.sqhk.co/pedidagow/bib28ib/childcare_by_tadpoles_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/velujuvaxal/5FMhajh/depumeku.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/yifijem/63284774139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_600bb754c631e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388048/normal_5fc72128053bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419644/normal_5fceb4d95ea95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5fd377222bdab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fcd5e169efeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484993/normal_5fec1a85d9d73.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/ctgeGH8/gefefi.pdfIn PDF document text
    • https://cdn.sqhk.co/titubebojek/u29iehh/bike_games_free_download_apk_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417129/normal_600c79fb162ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477877/normal_600179a16a605.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fccf58a5abec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_6026191155dd9.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_off0000f90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90C 4984 bytes
SHA-256: e089f5da79a224ef007e1be9ff2f5dfee7ca266866a5d04cefb2af3c75c7bee6
font_01_sfnt_off00010a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A11 10688 bytes
SHA-256: 03ad0dc6a5c2b55217d17449e48d590e3d78800ccb8f8b90f694b2dbcb8e001a