Malicious PDF — malware analysis report

Static analysis result for SHA-256 aedb635c8af9ab06…

MALICIOUS

PDF

27.2 KB Created: 2021-05-28 16:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 192b8fd95187514ed8363c7bd1c14ec0 SHA-1: e983d724a0fefdb3937db965b58e436fb541329e SHA-256: aedb635c8af9ab060f949e68f8146e3cf5c40ad4a8763ca32418318c6fa40346
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns. It contains a single embedded URL that uses a URL shortener, indicating an attempt to obscure the final destination. The document's structure and heuristics strongly suggest it's designed to trick users into clicking a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0055

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 27 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://bezplat.page.link/bF2J In PDF document text
    • http://www.microsoft.com/typography/ctfontshttp://www.munchfonts.comMicrosoftIn PDF document text
    • http://www.microsoft.com/typography/fonts/default.aspxIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C2 6996 bytes
SHA-256: 4e26f6c12cfc57fd4b9db3420adfe98656a6fc3af2e76d73435a468959f5f8c0

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