Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f280fd8e8040084…

MALICIOUS

PDF

77.6 KB Created: 2021-05-28 18:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e566b7c582d672f399dabbcf538c4767 SHA-1: 58afbe5e16ae809c3f80c90a83333a4b67f30519 SHA-256: 8f280fd8e8040084450da4049502600f4ca791c758b8979cb1f84b4043232d43
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. It contains a link shortened via mrizi.page.link, which is designed to redirect the user to a malicious destination. The file's structure and the presence of a shortened URL strongly suggest an attempt to trick the user into visiting a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0178

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 77 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/oZRm In PDF document text
    • http://www.microsoft.com/typographyMicrosoftIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B5D 3076 bytes
SHA-256: d42835e0ced8d3c39f692840393c38c28c43e2af37e7501f9f8ca86fb0c2ea63

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