Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ded492285607ece…

MALICIOUS

PDF

71.4 KB Created: 2021-02-27 18:34:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 63e272bfc6ff85ab1a665f2ebdfbc9bb SHA-1: 2f078216d8f9e9091a78d9f75f43a43a22f5985d SHA-256: 6ded492285607eced9a1656de2b0bad4c9dc92673324f6bad1cb8f96b6b78a5b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=monopoly+rules+buying+houses+in+jail PDF link annotation
    • https://kesiwupi.weebly.com/uploads/1/3/1/4/131407351/55ee0.pdfIn PDF document text
    • https://bimomudunaxa.weebly.com/uploads/1/3/4/7/134757379/b59776953a94.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunudixa/hcifnAy/18395191048.pdfIn PDF document text
    • https://tabofeluraratub.weebly.com/uploads/1/3/1/4/131438776/6718732.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413125/normal_5fc7ede5e834e.pdfIn PDF document text
    • https://medabuxizuf.weebly.com/uploads/1/3/4/3/134383904/zodusoma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5fcbfc6d71d0e.pdfIn PDF document text
    • https://guferewefozitak.weebly.com/uploads/1/3/4/3/134393558/kiwazobowavul-bevuvo-dizelubegugamim-disedore.pdfIn PDF document text
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/cdb133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5fd241123548d.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/measuring_triangle_angles_with_protractor_worksheet.pdfIn PDF document text
    • https://vavuloxen.weebly.com/uploads/1/3/0/7/130738497/4434aaa5.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_off0000da59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA59 5404 bytes
SHA-256: 3bb8c1463494c02b00c939ab706206c7f7ff4baf53a879482ae22871a45536d5
font_01_sfnt_off0000ecc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC7 10572 bytes
SHA-256: f0ec84b48feadf5c40aa57ff18bd0ee197f0f2e4405d797a6872edf29b5505c7