Malicious PDF — malware analysis report

Static analysis result for SHA-256 9542e68acb26186f…

MALICIOUS

PDF

24.8 KB Created: 2021-06-05 09:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 4310d19f0c88a82a21489ed141fecb08 SHA-1: 4d8288f9153ed859b8f73e66682668df9e5557a1 SHA-256: 9542e68acb26186fa98f5094fd0f726ff4dfb5729e4994524d71ea2a9b2131b1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as an image-only lure, a common technique to disguise malicious links. The embedded URL, 'https://lokw.page.link/FvC3', likely leads to a phishing page or a malware download. Although the URL itself is marked as benign, the overall structure and heuristic firings strongly suggest malicious intent. No scripts were extracted, but the PDF structure itself is indicative of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7423

Heuristics 3

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 24 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://lokw.page.link/FvC3 In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FEF 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

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