Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8dc97bcc4bfc1c…

MALICIOUS

PDF

60.8 KB Created: 2021-05-26 10:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 074545bfbb2685c430f1624069e14b60 SHA-1: f12d0bf3466f280cb900ccf7acf816250e559a44 SHA-256: 0c8dc97bcc4bfc1cdfa2259ec0991543a8c572e4b1498da93262a5fece4738b7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a single image and minimal text, with a clickable action pointing to a URL shortener. This technique is commonly used to obscure malicious links, often for phishing or to redirect users to download further malicious content. The presence of a URL shortener further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0168

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 60 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://emuskone.page.link/zMim 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_off0000d3ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AE 16112 bytes
SHA-256: 961a7692c21fde929e74680df00ca76fa56ecb9896314e0f1614f12b37933684

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