Malicious PDF — malware analysis report

Static analysis result for SHA-256 3413fe41ccc029ab…

MALICIOUS

PDF

21.8 KB Created: 2021-05-28 10:39:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 570972f0fdbfb67c46d9866e88f76241 SHA-1: 0f99b2389d09fb80c7736dad84729aa557f59372 SHA-256: 3413fe41ccc029abb0befc4d01505d9dda25439a96abd65d996f3cc97f8a1fc8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, containing only one image and minimal text, with a clear instruction to "click the image". This strongly suggests a phishing or malware delivery attempt. The embedded URL, mrizi.page.link/5Z2u, is a URL shortener, which is commonly used to obscure malicious destinations. The document's structure and the presence of a URL shortener are consistent with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier clean score 0.1241

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 21 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://mrizi.page.link/5Z2u 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_off00003ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE3 15352 bytes
SHA-256: 568a53de0f2e7dec117e8e7df3e42ddb964b5e92b06f1495abdb595a72072413

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