Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec7e982a9f780da…

MALICIOUS

PDF

79.9 KB Created: 2020-11-24 02:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 221d85837411ef28058e23fc94d53d96 SHA-1: 997f6e44034c9f405ed79a4d87ad30fd8c71b28d SHA-256: 0ec7e982a9f780dada8e24f4296cef0d4d9923fc869d876c7fbe5ffe5c7eaf40
96 Risk Score

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 0.9997

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://traffset.ru/strik?utm_term=cfa+curriculum+pdf PDF link annotation
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/6516439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f86fc6ca28e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374853/normal_5fa152eb2c7bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_5fb89e6c033e7.pdfIn PDF document text
    • https://bumenabizobopum.weebly.com/uploads/1/3/4/4/134462968/fogubufaviduz-vilujalos-pofoban.pdfIn PDF document text
    • https://judikojegewag.weebly.com/uploads/1/3/4/5/134583508/rilivemoluned-gafadezabebelax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425784/normal_5fad61ccb529d.pdfIn PDF document text
    • https://figuzenage.weebly.com/uploads/1/3/4/4/134472600/38533a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/91985557032.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/harrison_bergeron_vocabulary_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/alcohol_use_disorder_clinical_practice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/glucolisis_aerobica_y_anaerobica.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/33593196256.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_off0000f3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D5 5028 bytes
SHA-256: 16ee6572ce9f6a83e993433bee7348c2f93cca4f009998a9abec2bf64c3e6d45
font_01_sfnt_off000104d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D0 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00010d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5E 10864 bytes
SHA-256: efcaac4118e9d9fab4fea64b568b9c6d1241121641029aff5b05479ef5da0910