Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d65c85988cf1b2…

MALICIOUS

PDF

104.7 KB Created: 2021-03-28 01:21:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: baaae00c6d3b9ec8a3b58e718c794534 SHA-1: be260f90cc99cd14c4a310ab6c593ee33784c021 SHA-256: b3d65c85988cf1b2ce45b1b4c6ac0bb337d4a17e3fbec28ef38f496e15517599
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a link farm designed to redirect users to potentially malicious sites. The presence of URLs like 'https://botokaw.ru/wix?keyword=yamaha+motif+rack+manuale' and 'http://vutisonoj.sportsontheweb.net/35816897042.pdf' further supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/wix?keyword=yamaha+motif+rack+manuale PDF link annotation
    • http://vutisonoj.sportsontheweb.net/35816897042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505687/normal_602ad2609f1a0.pdfIn PDF document text
    • http://discount50.pro/kopovusubatetawiweev0ye.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470399/normal_605b3803eb7b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493541/normal_5fedd67cf15d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fd34c6a3a1bd.pdfIn PDF document text
    • http://ekzo-fruit.ru/dugerulusisutijerowewbbcv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_603205e5b213f.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/11913462728.pdfIn PDF document text
    • http://ccckkkkk.space/rebogubunisuwnqt1x.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://uploads.strikinglycdn.com/files/87a84837-3400-4706-9570-40ee74b78a44/power_pot_pressure_cooker_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86752bf5-2023-4c41-b65f-97b83ce206df/secondary_drinking_water_standards_california.pdfIn PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_96a013c05f784794a57498e8a7d19934.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07c906e-3f1e-4b3c-9b64-74aac3cb7fef/36975000349.pdfIn PDF document text
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_c146dc4a20c641cca378ecee25f34cf1.pdf?index=trueIn PDF document text
    • https://3caa4030-7dd6-4be4-8a8a-e1981c45b3cd.filesusr.com/ugd/704988_be0ac1ed69d2451bae8b453bc5fbf572.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/79641ed2-5bbb-4a89-830d-c551153f2c4d/g_shock_g100_bv.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_off00014ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB0 4848 bytes
SHA-256: a2c6a5816a4f00f3f72e1d40fe3bae042afadbcb436f91c752fa5daed24ee914
font_01_sfnt_off00015afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AFE 12764 bytes
SHA-256: 3b65915c9a83c15d4520859d47e8e7913d6c1069cd1c87a3897b7e89416b90ec
font_02_sfnt_off0001851f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1851F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.