Malicious PDF — malware analysis report

Static analysis result for SHA-256 039c3d23b86ff46f…

MALICIOUS

PDF

71.2 KB Created: 2021-02-21 09:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 443182be5fd403980e640e29addcb299 SHA-1: 1ee46cbc8a191ecfcd287d57c03a5fd81fb6f922 SHA-256: 039c3d23b86ff46f55abc8c047b34df53f8090b2ddbe42398bc9364350c42a03
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=ib%20biology%20internal%20assessment%20limit PDF link annotation
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/sedesemijun-tujuduju-xibugaripetalo-biwuzuvokaped.pdfIn PDF document text
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/gagewegapaw-gepujulumemem-solidutugafi-tofam.pdfIn PDF document text
    • http://copyright-infringement.business/sejakotixazebovikapiwitn1r.pdfIn PDF document text
    • https://wuwilosuz.weebly.com/uploads/1/3/4/3/134394730/bakikisewepit_miwujuz_tewil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366395/normal_5fec35621d148.pdfIn PDF document text
    • https://teliwunamadawab.weebly.com/uploads/1/3/1/3/131381891/lipezilipitomaguj.pdfIn PDF document text
    • http://form-copyrightservices.com/affirmed_meaning_synonymnbwxb.pdfIn PDF document text
    • http://armlur.space/gamisefaxewinetovirala5dv62.pdfIn PDF document text
    • https://feropozu.weebly.com/uploads/1/3/1/4/131454035/bodudut-rimubotujep-fevirewowavepex.pdfIn PDF document text
    • https://dutedurelixuvu.weebly.com/uploads/1/3/4/3/134320021/4906605.pdfIn PDF document text
    • https://tidatulo.weebly.com/uploads/1/3/2/8/132815220/jemeza-sudojedaj-noralejizeme-gipexekezufoxu.pdfIn PDF document text
    • https://kavirozix.weebly.com/uploads/1/3/3/9/133999962/rijodenojife.pdfIn PDF document text
    • https://pedasivu.weebly.com/uploads/1/3/5/3/135387907/vulixixikoturisaz.pdfIn PDF document text
    • https://wujuxibivotalo.weebly.com/uploads/1/3/1/4/131453464/f0f74843104e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kujarison.rf.gd/aegisub_cho_android.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_off0000d992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD992 5184 bytes
SHA-256: 4640177d404b754b60c0002534d04d66e55f0c1fe66797c1b6d918d80c334f9b
font_01_sfnt_off0000eb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2C 10832 bytes
SHA-256: f407e5621c19c399966864d6900fd77c2cccfbd438b64aafd98bf90d36e46a3d

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