Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37cf666621377fa…

MALICIOUS

PDF

69.5 KB Created: 2021-02-25 01:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 641005739dc478270e2ca67e5a734479 SHA-1: 42f606b09faf848efb89bbb626aaf6b4aed76edd SHA-256: b37cf666621377fac6503fbe4490fd9c773f2af2bf700d9016cbd6c71025059a
126 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
  • 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://seumenha.ru/wix?keyword=map+of+alagaesia+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449184/normal_602cae347ef8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393506/normal_5fee875fed6d7.pdfIn PDF document text
    • https://rurasaza.weebly.com/uploads/1/3/4/8/134869927/2188211.pdfIn PDF document text
    • https://sobexezawatu.weebly.com/uploads/1/3/4/9/134903145/sutasel.pdfIn PDF document text
    • https://mizavuzozubex.weebly.com/uploads/1/3/4/7/134730625/e7faa28728b404.pdfIn PDF document text
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/ruterudelajamonuxu.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/how_long_for_chicken_tenders_on_george_foreman_grill.pdfIn PDF document text
    • https://jizexukufi.weebly.com/uploads/1/3/4/1/134109318/mumoxipinosoxu.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/64922385711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_5fd89a2559f13.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/1051527266.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/galinikagopit/nitowasazajuwusetomenuxot.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/net_framework_3._5_error_code_0x800f081f.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/72598164097.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/4711017504.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/lincoln_vs_johnson_reconstruction_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/nunaripu.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/dota_2_guide_indonesia_sniper.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E2 4720 bytes
SHA-256: 64fcd03bae72b1ae698e24c048cd282e673afcee1b4e5b90cfe0624658636d75
font_01_sfnt_off0000d8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FE 10076 bytes
SHA-256: ed15968702fe78af4956540f2aa86e016ec681e7855e9eceb1012a2560f2ed86
font_02_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3