Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac882cadad6488f6…

MALICIOUS

PDF

10.4 KB Created: 2021-08-09 21:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1de21c2f2d993f7506c3171500c034d0 SHA-1: fdf3e458b7495edaaaec317883d563e1a3a82e1d SHA-256: ac882cadad6488f67cdf6bef130948e90a49c14b226c31d1ef08db18c6de31f1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common phishing tactic to trick users into clicking malicious links. The embedded URL points to a URL shortener, which is often used to obscure the final malicious destination. While the URL shortener itself is confirmed benign, the overall pattern suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5785

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 2 image(s), only 0 text block(s), carries a click-outward action, and is only 10 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://daserropl.page.link/rfAH 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_off00000f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D 14752 bytes
SHA-256: 35dcd105017776721c2f67dd0bea8329190d2870b860af290c5c1fd1db60bb3a