Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54493b9bc122ee4…

MALICIOUS

PDF

75.7 KB Created: 2020-12-23 15:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fa4625080dcbd80984243b1d23cfe447 SHA-1: f1f54bcb7ccb827fe8826bf7b13289011b19a9fb SHA-256: c54493b9bc122ee4b18e450e07d6166bd53ee0b5f7f01a7fd0c0caf025438429
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 0.9985

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://trafffi.ru/aws?utm_term=devextreme+cell+template PDF link annotation
    • https://femodamokej.weebly.com/uploads/1/3/4/5/134529999/abaf7a6e14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_5f8d2ce29df61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415291/normal_5fa77d8eaf540.pdfIn PDF document text
    • https://gerorajowivorem.weebly.com/uploads/1/3/4/6/134686153/nusajavumalavanojex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402940/normal_5fceaccf164eb.pdfIn PDF document text
    • https://biwezufum.weebly.com/uploads/1/3/4/8/134872286/mavokulit.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/sowokuluba_danejobulawi.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/genedonapubefe/1218143150.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/metso_jaw_crusher.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_off0000e9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A3 5028 bytes
SHA-256: a453c2c854fee684f2a7c4b699ee2b657903617b3d517a293137afcf7d411883
font_01_sfnt_off0000fab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB7 11644 bytes
SHA-256: 03cdab07b7efbabc77e7610808eeb5c9bc296a85296358ccbe073d3d315356d2

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