Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57e7c163b276223…

MALICIOUS

PDF

22.3 KB Created: 2021-05-28 10:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9bde1364e7867637c4392b9abd7f94cf SHA-1: 615940deac53dc7655afeab78babf2db2ecc89d6 SHA-256: e57e7c163b27622399db3cc9f4c0b8275b7140cfdfb1310493f35ab9cd8fa33c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic for phishing campaigns. It contains a clickable link that redirects through a URL shortener, likely to a malicious site. The document's structure and the presence of a URL shortener strongly suggest an attempt to trick users into visiting a compromised or malicious web page.

Machine Learning

  • Nyx PDF Classifier clean score 0.1174

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 22 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://znakudachi.page.link/7mUL 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_off00003aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AEF 15748 bytes
SHA-256: b754b293910fc481f1045a7ad13cd835d83c618ec2c6b389a03e38b79f803901

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