Malicious PDF — malware analysis report

Static analysis result for SHA-256 d461f31fd799654a…

MALICIOUS

PDF

76.6 KB Created: 2021-05-24 19:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2c8b2d752390cc350225e816c694f118 SHA-1: dffde54b0fcaab7df1dd0d12707399341112a47f SHA-256: d461f31fd799654aa5aa8f3b14e892240b5e49cfc0c54fb0a78039c1d9d80c20
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 0.9997

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://xezojetit.ru/strik?utm_term=blender+2.8+character+rigging+tutorial PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407795/normal_6034ec9392126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_60330e1a78163.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450045/normal_5fe0ddc165372.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473039/normal_5fea0867e1b09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420036/normal_605976c08f30c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_602de7aaebc70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5fe9079b29be1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_60538f23a9e2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5fc78f5a3b54e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e1b75c-855d-42a7-bb17-c7c8ac257008/34187053863.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/3143345267.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/jesus_calling_sarah_young_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/chaal_jeevi_laiye_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/dofejeb.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/kurefoxuzuwovobigusaj.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/27631716863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b875272-9033-4c81-ad89-cf904872993d/toro_battery_powered_weed_eater_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/dewalt_flexvolt_mitre_saw_10_inch.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/18352427947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a26426f-44e8-471d-a460-9db1be403b86/royal_navy_officer_training_requirements.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_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 5432 bytes
SHA-256: 3942ee0dd2cd3ebb28642089ab5f610028a5303f7ea5b24e73d59d11929a5760
font_01_sfnt_off0000fd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD85 11428 bytes
SHA-256: c2cbaa947b0bc424bc5deb37128108033ed6d5f3450109fdfcd38a798f8b2633

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