Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3768dfed33aab9…

MALICIOUS

PDF

71.8 KB Created: 2021-03-12 04:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8162a7f74671200206f7592674ee4bfc SHA-1: 441296ea6a0634bfbf3dec39af50eda84250146b SHA-256: 3a3768dfed33aab90b97badefc8eecf051494f06f3413a252eb907c90b9c4a2c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=physics+worksheet+lesson+6+projectile+motion+answer+key PDF link annotation
    • https://jukorupojos.weebly.com/uploads/1/3/5/3/135344641/midezaridim-mepoxapewuwamew-dekakob-bajufugubor.pdfIn PDF document text
    • https://dowozazufexu.weebly.com/uploads/1/3/4/6/134606261/peterovesegapidibun.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/4144588.pdfIn PDF document text
    • https://navanelesud.weebly.com/uploads/1/3/0/9/130969746/4524325.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/68843274891.pdfIn PDF document text
    • https://jewupoma.weebly.com/uploads/1/3/1/4/131437657/9636023.pdfIn PDF document text
    • https://wowujisalot.weebly.com/uploads/1/3/4/3/134349860/31303b7cd4.pdfIn PDF document text
    • https://pememeva.weebly.com/uploads/1/3/0/8/130874233/c65f66d2.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_d706344daba44564a9b4f0c4f66d2317.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/576d921e-4578-4e1b-8c2b-1333f5e70a24/rosixozazunifukaduruwi.pdfIn PDF document text
    • http://belibivizonojo.myartsonline.com/11159582646.pdfIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_43b5e4aa9aaf485885241132937de860.pdf?index=trueIn PDF document text
    • http://fekepoloper.rf.gd/4208870528.pdfIn PDF document text
    • http://wefixewixe.rf.gd/9326923211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/862cba0a-9aaf-4fca-9239-227bb3ef2a9f/28971427904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a48b6a13-cbd3-469c-a01c-303bb2404788/gepogatej.pdfIn PDF document text
    • http://fawazom.rf.gd/autocad_mechanical_3d_drawings_free_download.pdfIn PDF document text
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_aa6eac745886431eb7934ecd21ce16dc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f234ef5b-2983-43af-8c58-5d82e3630733/find_last_used_column_name_in_excel_vba.pdfIn PDF document text
    • https://01477de9-116b-42a6-a62c-54244336611e.filesusr.com/ugd/dea9e9_610f9af49b1d42d4bf4d4d9dc42f7567.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a1f113f-c630-4ee0-9498-8ce2505c4e77/burger_king_around_me_now.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_off0000d316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD316 1664 bytes
SHA-256: 225bb5659721e06e623b07870843bc472387148658ae61c107a360e7bd04c5cd
font_01_sfnt_off0000db0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0B 5660 bytes
SHA-256: a214f026b1e1c093e91204630bad0e161dced97066ec5c73f4ca278b03522fa5
font_02_sfnt_off0000ee3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3D 10224 bytes
SHA-256: 7aeebbe2c75e7a12d0a42ec818e69c0c80fe7b40b719de39eb53cd7bd4ca20ec

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