Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4090bfdbd3abc47…

MALICIOUS

PDF

60.5 KB Created: 2020-12-11 00:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c3f680c5758f794217a86186fc3e5cf4 SHA-1: 2e29f5dd5d52c62830cb5870a40f83eb5ba0d8cf SHA-256: e4090bfdbd3abc47bf23384926ca97de16ceb2bc665774e98c7077197f273ba6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/123?utm_term=stanley+d1000+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412593/normal_5f9be0a20233d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_5fc207fd6da95.pdfIn PDF document text
    • https://kagizorofom.weebly.com/uploads/1/3/4/4/134476017/binisuvuwovox.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/kijanen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5fc1fb108132d.pdfIn PDF document text
    • https://gefaturulabi.weebly.com/uploads/1/3/4/4/134487578/23f057196e059d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_5fcc8398f0d28.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/6101509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f8811dd34ca3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f882553c77c0.pdfIn PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/9b0a621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f91e26ce0a77.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/debamijizozexo/vimanas_ancient_india.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1792e6d49a06bb596e76/1606293394659/2886142340.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/gexejizaxuwes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fcdf476eb18547f4ba82c84/1607332983914/21282440921.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b8d648c1673e559eb781/t/5fcfe4604711ba6f5a6e059c/1607459937436/wurulinedepenavik.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6bd3d63393450184f45d4/t/5fd1bb4499fe644e8a5f6015/1607580485358/pigevutobijabamemofun.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_off0000b171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB171 5096 bytes
SHA-256: 197ad9985099f876514afe72449090d779e307acd1bc79c9a1429b08122d4375
font_01_sfnt_off0000c2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C1 10176 bytes
SHA-256: 12ed8e74a363ff7ff428fbeae0d675808ae72542775de779b716d7c8e1d99d3a

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