Malicious PDF — malware analysis report

Static analysis result for SHA-256 3913160542e343e3…

MALICIOUS

PDF

15.7 KB Created: 2021-05-28 16:26:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5446cfe2251da0434c37741694180602 SHA-1: 784fd82d2b488c72a5442220311dd285cab80993 SHA-256: 3913160542e343e3d69c477cf98179e47b00c1e3e6ec1642501c5b5eec0c4177
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing attempts, which prompts the user to click on a link disguised as an image. The embedded URL, https://yesbaba.page.link/sxYm, is presented as a call to action within the document body, suggesting a malicious intent to redirect the user to a harmful site. The document's structure and the presence of a URL shortener further support its use as a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0048

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 15 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://yesbaba.page.link/sxYm In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E68 4556 bytes
SHA-256: b6f61fad93fa585a0f9ab70cbc95eb7765c4ff9bc2276310fba99e3a5f5a89e6