Qakbot — PDF malware analysis

Static analysis result for SHA-256 c3002298fa7f8aa4…

MALICIOUS

PDF

87.9 KB Created: 2023-03-21 21:52:09 +00:00 Authoring application: dompdf 2.0.3 + CPDF
MD5: 52ac0434bb1ee33b31aec4f3ff7fa258 SHA-1: dbcc99512f409c63c5646ea52b0be50c552a0b36 SHA-256: c3002298fa7f8aa4e497a52082c94860455c9f0645e50a853ba71e759deaea12
82 Risk Score

Malware Insights

Qakbot · confidence 95%

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file is identified as an image-only lure, a common tactic for phishing. ClamAV detection confirms it as Pdf.Downloader.Qakbot, indicating its role in delivering malware. The embedded URL, https://srctelecoms.com/ted/ted.php, is the likely destination for the payload download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0537

Heuristics 4

  • ClamAV: Pdf.Downloader.Qakbot-9989703-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Downloader.Qakbot-9989703-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 1 text block(s), carries a click-outward action, and is only 87 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://srctelecoms.com/ted/ted.php

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