Malicious PDF — malware analysis report

Static analysis result for SHA-256 3866bf7a6083e3da…

MALICIOUS

PDF

81.6 KB Created: 2021-04-09 04:37:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 325234191cc4f45dbef9adbeece543f4 SHA-1: 56e85643fc24a9135db0a0c70fdfd47bc8e7aaa8 SHA-256: 3866bf7a6083e3da663bfc947ab9d51eb00b2677fd5fd89ab7c08a4ed31e5aaf
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 0.9996

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://xezojetit.ru/strik?utm_term=constitucion+dela+republica+bolivariana+de+venezuela+1999+articulo+64 PDF link annotation
    • http://totakonepis.iblogger.org/marobuju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5ffefead80eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416143/normal_600ed6587dd88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368246/normal_5fee17104200e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409818/normal_600aec2c6d0c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458838/normal_602d9b36e2ecc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378848/normal_6026dca4cf5cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://afa032df-bfad-47da-a9c8-c79260182993.filesusr.com/ugd/6f9b04_76b3e77245354d67bdc109f167dfa947.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/137f247f-da38-4466-8d40-e11a6dae6923/base_coquille_graco_click_connect_snugride_35.pdfIn PDF document text
    • https://c72a6d71-2fad-4f5a-8b7a-a7c165485bce.filesusr.com/ugd/a4966f_3f1426b3673040698445d1ca09588902.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/52689360504.pdfIn PDF document text
    • http://vevemaj.rf.gd/kavezivevesunetuzabud.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/riperotoxetebofixabuzag.pdfIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_f835ac11268b41e189ada0624e9ba24a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pogolo/balance_sheet_definition_and_example_in_accounting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a31cf5-7e69-4f56-b331-11fa72082810/cost_to_build_an_indoor_soccer_facility_in_south_africa.pdfIn PDF document text
    • http://nujuvidiramefo.epizy.com/bose_soundsport_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/badbadnotgood_iv_sheet_music.pdfIn PDF document text
    • http://folapalej.rf.gd/61621349997.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/fojofevulibazidukobipor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79d6d27-243e-40ae-b604-f32b99fdaf61/cual_es_la_importancia_de_la_matematica_financiera_en_la_vida_diaria.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_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 5672 bytes
SHA-256: 0706af5f7f88b48febd11792b2bea01d1866545292037462d3ebb7e944db7194
font_01_sfnt_off000113f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F1 10448 bytes
SHA-256: 2b7bb9d25457163033653b8822475dec0ce577bc1a30ed9cbda7f6e298971aa6

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