Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4a6bba743922b2…

MALICIOUS

PDF

77.4 KB Created: 2020-11-16 23:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a1760cc98bae7352773c5607f50b2ac9 SHA-1: 5ad953bcb2d26ee6bc7d3c7b8294443ec5699666 SHA-256: fa4a6bba743922b2a69e2934f0d65899a6370cecc0f11cd5b3993f514ca2559c
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=sim+girl+gold+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419205/normal_5f970f73e042f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xenavuxa/10888409431.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/bodoni_regular_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/melawinasizubuxamuzup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4811267-9a1d-493b-9419-88989545a22f/86825266853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa185e62-9b14-4ee6-a832-19e901af593d/doxavuvepuzepojelogubeto.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/outlook_company_email_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/adobe_after_effects_bangla_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/advertising_messages.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/79850636692.pdfIn PDF document text
    • https://s3.amazonaws.com/rijedifatufod/96258185979.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/leweroxanofumobil.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/joint_service_commendation_medal_ranking.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/jarapemusukodigo.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_off0000e66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66C 4556 bytes
SHA-256: d429cac4501ffa7b5f95741bc07e5768d068de3c0212e179c11aaddf64ea6c6e
font_01_sfnt_off0000f5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D3 10864 bytes
SHA-256: 0e8fccb9de3e944971466aa276e550c022d3f5c43856c4d0596cc6599e98ea83
font_02_sfnt_off00011b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B18 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333