Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d959ca0e0d255ae…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 14:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 071a6665aa579106d3661f060dc4a543 SHA-1: 719f3a5b2d038e2d10efd1574886bb79bc96d4eb SHA-256: 2d959ca0e0d255aec6aab21c9d24d69a3299e53a2ebf1ce245e57a539630e66e
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://leonvi.ru/wix?keyword=solve+for+the+given+variable+worksheet PDF link annotation
    • https://nazoxuja.weebly.com/uploads/1/3/2/8/132814973/2659354.pdfIn PDF document text
    • https://pagopolekabob.weebly.com/uploads/1/3/4/3/134305888/vitixulejusora-nokanevu-vapiwojereke.pdfIn PDF document text
    • https://fukuzodi.weebly.com/uploads/1/3/5/3/135329923/vulogok_vezexazaru_kexafagopaluso.pdfIn PDF document text
    • https://tuwopabawebude.weebly.com/uploads/1/3/1/3/131382790/42f1cdcb243b32.pdfIn PDF document text
    • https://pomulopegodetom.weebly.com/uploads/1/3/1/3/131384256/deriwek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469128/normal_602fc52d0c833.pdfIn PDF document text
    • https://valazasabo.weebly.com/uploads/1/3/1/3/131398294/ratupukuxedobun_kodomutubaxo_paguluwesisava.pdfIn PDF document text
    • http://golesaluwo.66ghz.com/3ds_max_shortcuts_keys.pdfIn PDF document text
    • http://fozovozazu.iblogger.org/miliwaferudakufusalit.pdfIn PDF document text
    • https://kobalogowitat.weebly.com/uploads/1/3/0/7/130776452/45e29294.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466996/normal_6004858153211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_600ce0c7dc9d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/facebook_videos_private_url.pdfIn PDF document text
    • http://rivejekab.epizy.com/famizasi.pdfIn PDF document text
    • http://kujidoxavok.rf.gd/breckenridge_snow_report_march_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/refovijugipekigaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/dipowulisefetopa.pdfIn PDF document text
    • http://wobemiko.epizy.com/45193878996.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_off0000d4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 5488 bytes
SHA-256: fde5bda15fdba5b4dd3193d68132f2e08d9380ac84680aaf229caf2c8b467673
font_01_sfnt_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 10104 bytes
SHA-256: c617e493a2e9e4a3c50d6322562224aa7d3dcc33210da3d0d76e106e4916b7f4

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