Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecadff4d41048181…

MALICIOUS

PDF

80.7 KB Created: 2021-04-20 14:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0cee9505f32c61a1ec9737b590401dde SHA-1: 54de69947abb63f39f2af8ec685a4211b3a79afa SHA-256: ecadff4d4104818192366d5186e63e04a32b6f9629b136528037c20ceda168bc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=k+tipo+de+esquemas+hay PDF link annotation
    • https://fesitafixob.weebly.com/uploads/1/3/4/6/134653549/xaxotewis_baliwizefi_guwiwonu.pdfIn PDF document text
    • http://fc-aromat.ru/35194483648tnj4p.pdfIn PDF document text
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/webamero.pdfIn PDF document text
    • http://storefromit.pro/32290907262r8czr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455374/normal_6063f1c070117.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/88769186096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366028/normal_5ff7d7115693d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446272/normal_5fccaf9c56485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_603fe0363ffc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483359/normal_6007ee9955ffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444095/normal_606480e1ad7da.pdfIn PDF document text
    • http://pisufixefonof.scienceontheweb.net/breast_cancer_project.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_605d6f5aee2f6.pdfIn PDF document text
    • http://nuwojukow.mygamesonline.org/16830027745.pdfIn PDF document text
    • https://nolabuxovitu.weebly.com/uploads/1/3/5/3/135305824/padezevosureviwagu.pdfIn PDF document text
    • http://dk-inc.xyz/vobeg3q48t.pdfIn PDF document text
    • https://pupoximoz.weebly.com/uploads/1/3/4/5/134584835/71fcea92.pdfIn PDF document text
    • https://boviseweduxiraz.weebly.com/uploads/1/3/0/7/130776594/bewiwibudijanatebe.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
    • http://sisufovofow.atwebpages.com/buck_s_theological_dictionary.pdfIn PDF document text
    • http://jeximojela.myartsonline.com/69990444397.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 5044 bytes
SHA-256: 132eb895b256ed30492372e22793811f1888e687a74d7d802c4a8bf10553da70
font_01_sfnt_off0000fffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFD 11788 bytes
SHA-256: 37dee9b42cd8bc5091c5d15119dff75f7ed8157eb4c022e679be7cc4169d9036
font_02_sfnt_off00012617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12617 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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