Malicious PDF — malware analysis report

Static analysis result for SHA-256 4761db221418ce9b…

MALICIOUS

PDF

60.6 KB Created: 2020-12-04 04:47:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: eb7b8c77dfd63e071f21ee7507459a18 SHA-1: 9bb4b8950872a7b591915842113d0a5bb88c5df9 SHA-256: 4761db221418ce9b21a7affd152b5373c6c90d3cc034793f772559bbc971f8f0
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 0.9996

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=walnut+hollow+wood+burner PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392453/normal_5fbb2f2718e5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f8879c26da00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468255/normal_5fb71e689fb39.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/mejigavukolu/27795227534.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/chrome_extensions_error.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe180e4e98326c02d829d7/1606293520680/16328740163.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/56573074438.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1022d239b07229131d226/t/5fc99a649c93c058c47e56d0/1607047780486/exoplanet_archive_ipac.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc507951c8c7413144c7bbc/t/5fc6494f3c6ccf69f334f3b9/1606830416900/pudijaweperotikowo.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/tefulumuluwivewixazowogel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2223e02d7d67505df527/1606230563427/jelisagopajadonowunub.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/dadotavurinagilevadevoxu.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_off0000b069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB069 4980 bytes
SHA-256: 75e4e3437a3551c7b965efd7db9b0c7c36c7af22bb340cbc97ce0553ebe02a1f
font_01_sfnt_off0000c164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC164 10764 bytes
SHA-256: df5b638f9e8a58b43513cbc858b00fea413cf9ce9fe53a66964570cdb3db71d2