Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d5b4986badac93…

MALICIOUS

PDF

75.9 KB Created: 2021-03-16 01:32:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2570dfd7acff4e15191a5ee845348a9e SHA-1: b08cfb7ebfbfabdd8ba2c7212bcb99b4f492784a SHA-256: 10d5b4986badac93fd3ad59e82e451c42090aea938b641b66e7fcf6cf6fd92c2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though partially garbled, suggests a technical or academic context, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=tecnologo+es+un+titulo+de+tercer+nivel
    • http://nosixavol.sportsontheweb.net/economics_for_dummies_review.pdf
    • https://static.s123-cdn-static.com/uploads/4490736/normal_5ff8c77a622fc.pdf
    • http://givepamodugag.22web.org/certisign_driver_certificado_digital.pdf
    • http://zipubezexupoka.mywebcommunity.org/night_of_the_iguana_imdb.pdf
    • https://static.s123-cdn-static.com/uploads/4416669/normal_5fefb2b2cd543.pdf
    • http://penageli.getenjoyment.net/rebelion_en_la_granja_george_orwell_personajes.pdf
    • https://cdn-cms.f-static.net/uploads/4481424/normal_604d5e47aef53.pdf
    • https://cdn-cms.f-static.net/uploads/4404296/normal_60354972c8d94.pdf
    • https://static.s123-cdn-static.com/uploads/4496146/normal_5ff1338e87a00.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rumusajebal.rf.gd/blocboy_jb_i_am_me_free.pdf
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_60f3636033f44422ae34b87150d8091e.pdf?index=true
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_7978fadc00c247c1879c9978f611b17f.pdf?index=true
    • https://s3.amazonaws.com/metakibeme/online_form_for_mithibai_college.pdf
    • https://s3.amazonaws.com/nolarifaforuxop/75115442830.pdf
    • https://s3.amazonaws.com/sojenozap/hilti_hit_200_technical_data_sheet.pdf
    • https://s3.amazonaws.com/mukut/43736167487.pdf
    • https://b147a2f3-58af-4013-9def-597e86e94513.filesusr.com/ugd/47d6bb_81d6e3deb76e4ed9ab58628cb3b92882.pdf?index=true
    • https://s3.amazonaws.com/dobikasukavu/assassin_s_creed_2007_apk.pdf
    • http://gidepajujida.rf.gd/lulusabikisobezowus.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea63.bin
129356f2c2dfcf3d12fd330cb7c7f4401a745f8d58a33e6e1f176e037d1c5696
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA63 4904 bytes
font_01_sfnt_off0000fb2c.bin
c6ec71fceae6a59eac5e66d30585aafb8a2b2523da76254754ee7f2b6513ea87
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2C 11556 bytes