Malicious PDF — malware analysis report

Static analysis result for SHA-256 4601a813008d1e98…

MALICIOUS

PDF

89.4 KB Created: 2021-03-09 05:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 212be7515a18db22f3251159f768776e SHA-1: 17e2d8ab08d292eba0023347ba0f98da4b49b480 SHA-256: 4601a813008d1e98a4e2cdac7bf827cb9842086f65c308d886eb2548c7cd78a0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/123?utm_term=ielts+task+1+simon+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4529697/normal_6044ad455d14b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393028/normal_602d3e338ec51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488572/normal_5fdd45cde3958.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392209/normal_5ffaa7a68aeb0.pdfIn PDF document text
    • http://nulivanofika.mygamesonline.org/el_poder_de_una_visin_joel_barker_resumen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493550/normal_603b9b2aabda1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374978/normal_6001e2cd90881.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/tiwagoluseg.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/java_enterprise_in_a_nutshell_3rd_edition.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/zixajunatopekawaf.pdfIn PDF document text
    • http://galabogenezoso.getenjoyment.net/guitar_chords_left_handed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5fdd49cd44cac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tasetexogop.epizy.com/36994066861.pdfIn PDF document text
    • http://zoligagomuwe.onlinewebshop.net/poema_de_el_viaje_definitivo.pdfIn PDF document text
    • https://0e75ab8e-f6a1-4360-bef2-1d94e06fde4e.filesusr.com/ugd/c0518c_b373251a5873476f9d6ad13f6339aff2.pdf?index=trueIn PDF document text
    • http://zuzopejorexa.onlinewebshop.net/romaine_bilingualism.pdfIn PDF document text
    • http://savekuf.rf.gd/ruvusifuj.pdfIn PDF document text
    • https://459fb65c-52af-4c88-885a-43a44fbeaf25.filesusr.com/ugd/6a7407_38b79bea39494222b3cf570724483018.pdf?index=trueIn PDF document text
    • http://selepag.rf.gd/rufibelol.pdfIn PDF document text
    • http://mujasanowagug.epizy.com/jasper_reports_java_version.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_off00012326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12326 5144 bytes
SHA-256: d2b503c74788b2c9a29786dd0e577e8b5cf572cfb3d2e63ba72834faf9beeec7
font_01_sfnt_off000134a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134A4 10640 bytes
SHA-256: 2a7453b5ff4026366d2495017694c3e95fd27e6a33f674bf15eedd4904bbec95

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