Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3b00d2a346e766…

MALICIOUS

PDF

21.8 KB Created: 2021-05-28 10:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: b2e8fb46f61e9b02e65bd512f3f114c7 SHA-1: 9d37ef72dfbd4bca8d20c11e404d4003b1835357 SHA-256: 1f3b00d2a346e766ad33c933610e6fb821ff16a279375349d61ee096d6d852e1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file designed as an image lure, presenting a screenshot of content with a "CLICK THE PICTURE" instruction. This is a common phishing tactic to entice users to click on a link. The embedded URL, https://mrizi.page.link/5Z2u, is a URL shortener, which is frequently used to obscure the final malicious destination. While the URL shortener itself is marked as benign, its use in this context strongly suggests a malicious intent, likely leading to a phishing page or a malware download.

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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