Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b044baa0f92e5ab…

MALICIOUS

PDF

184.8 KB Created: 2020-11-10 18:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: aa35e051287913a93304dfac764fefaf SHA-1: d2ebd1d20138967bee5a5bf664ba84f68440cf51 SHA-256: 4b044baa0f92e5abac7966012c842c077b1380e12a7e4ec719c63c32db6ee64c
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://traffnew.ru/123?keyword=portland+or+elevation+in+feet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f96ce377a6fc.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/e15f111a1112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5f99a47e27b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f914bc076a37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_5f9d5217b2a5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_5f95939d116bd.pdfIn PDF document text
    • https://xelenupexom.weebly.com/uploads/1/3/4/4/134480667/doxogixire.pdfIn PDF document text
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/4126095.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/pedokeza/43825110001.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/50356050388.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/writing_broadcast_news_mervin_block.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/meucci_asset_allocation.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/fundamentals_of_accounting_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/tesla_model_3_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/pdf_secured_document_unlock_online.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_off00029782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29782 4784 bytes
SHA-256: c95e66670a7e5e244d631b26e65c04090a8537d3ded58277e367e49c3982f8cc
font_01_sfnt_off0002a7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7DB 14752 bytes
SHA-256: 39adfdfccb981433f52841ebe9287fe0ce9d883014cc2278f197692facab499a