Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24f0408677ca849…

MALICIOUS

PDF

30.7 KB Created: 2021-05-28 16:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 4c7af3c9b2f9c5bd1a5d8ff6c88cc7bc SHA-1: 1dc842a5700d311f7cbe7c018f84faa25ef0979d SHA-256: a24f0408677ca849bf8a2f7420e26d5a4e8c27ae1a6b3c860cb4d1056c3cda25
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 or malware delivery. It contains a clickable link that redirects through a URL shortener, which is a high-risk indicator. Although the document body is heavily obfuscated and contains no readable text, the heuristics strongly suggest a malicious intent to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier clean score 0.0046

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 30 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://goodpri.page.link/4arG 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_off00005864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5864 17152 bytes
SHA-256: b8fdf48eda3ef6266dd69074895426cb948d165eff8495f029e8a6680c60ce7a