Malicious PDF — malware analysis report

Static analysis result for SHA-256 83f83e95171aea36…

MALICIOUS

PDF

67.6 KB Created: 2020-11-18 00:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8b9e7d83ef26a07b292fecd75a6e01da SHA-1: d375cffb86facf28835a27f9e1c586fe27173e1e SHA-256: 83f83e95171aea3644e96cca680621eb3c63f83899920fd92d162c5619f54a6e
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 0.9998

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://traffking.ru/123?utm_term=english+11+the+crucible+unit+packet+answers PDF link annotation
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ratot_muweliwamopoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393356/normal_5fab3d63905cc.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/lodimodak-veduzizizegeluw-vaxisak-xafifokivevim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391611/normal_5f8e88d01673b.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/kalewu.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/purufiz/ms_dos_batch_file_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89bdc653-6c50-4cc5-977f-158f6596d06b/23627296755.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/8515645918.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/tozuluzivu.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/93549769199.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/vijuwuxedoza.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/accordi_chitarra_canzoni_italiane_facili.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_off0000cad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD3 5500 bytes
SHA-256: 6063cf90aac4ec0db78b792af24283bfab3e0ab5e4ba9f1b7d2900e3f67cb426
font_01_sfnt_off0000dda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA4 10628 bytes
SHA-256: 4a265aab204fb4676425cc9dccff66199162e5c5f66acfce4404c3c5b50d22d4