Malicious PDF — malware analysis report

Static analysis result for SHA-256 7562f048011f695a…

MALICIOUS

PDF

21.9 KB Created: 2021-05-28 10:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: a80c291ea79a64f9abed01fe2ae70a34 SHA-1: 21b675da1c68e8225b549979ef4be6f518acd982 SHA-256: 7562f048011f695a8e9c12e007b731df0bda643fe861c776ff1bd5a83fa8971b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns, which contains a clickable link disguised within an image. This link, https://volde.page.link/gs5e, uses a URL shortener, increasing the likelihood of malicious intent. While no scripts were directly extracted, the PDF structure and the presence of a shortened URL strongly suggest an attempt to redirect the user to a malicious site, aligning with spearphishing 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://volde.page.link/gs5e 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_off00003b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B00 15368 bytes
SHA-256: e1ff96424f6ff422b67e6bb5bc00585387c422ee041809b64b9be3a2395e50ac

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