Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d6982faef2f574…

MALICIOUS

PDF

76.6 KB Created: 2021-03-04 17:20:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b65f06ca64efc332bff1f5eee1174673 SHA-1: 711110d618aaa4a016590903df1c0496bbf9f192 SHA-256: e0d6982faef2f574dc2316c815a123963f16d4a23d1ec7ba5785c2cd6accfde1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are disguised as legitimate content related to 'bo3 multiplayer maps list'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to phishing pages or further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://kuzutuzo.ru/wix?keyword=bo3+multiplayer+maps+list PDF link annotation
    • http://smartline58.ru/307001146179dw2c.pdfIn PDF document text
    • https://cdn.sqhk.co/vilosezuj/eghifBg/pumugefakuniga.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/LgcGidp/2959431568.pdfIn PDF document text
    • http://maslovauto.ru/57939498503b8n1d.pdfIn PDF document text
    • http://namelesssouth.xyz/olvidar_preterite_chartrjjr2.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/UcMxjic/inca_empire_before_spanish_conquest.pdfIn PDF document text
    • http://insurancecarusa.com/morulo9csuy.pdfIn PDF document text
    • https://cdn.sqhk.co/renosopezare/jbFiNgh/tumbled_bluestone_pavers_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/fukafodifi/Nigjdha/elements_of_art_examples_photography.pdfIn PDF document text
    • http://klyshsheff.xyz/jim_kwik_memory_techniquesigpg0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_ee06ee264413485da4f6f73d2c791b0d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/what_did_the_renaissance_and_reformation_have_in_common.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/31434609501.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/13487935214.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/celebrate_recovery_step_study_book_4.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/kanikunadojesazatofen.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/92313641351.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/meaning_of_fax_cover_sheet.pdfIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_9ed51bd9485e445c960fb39637c68904.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuxexi/71474341543.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/salezunolaviku.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/69108777945.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/deep_pocket_fitted_sheet_only.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_off0000ef5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5A 5280 bytes
SHA-256: 6558d0f66b72567e7caebecea5fb6ff2b8944036e3c3f55498a4dbf48a149033
font_01_sfnt_off00010142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10142 10460 bytes
SHA-256: fcc870f81d716f507ba34fe63f385a0f8cff0e35033cab9bcb0f642e4ec0621d

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