Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3c5af2060b5fc1…

MALICIOUS

PDF

18.9 KB Created: 2021-05-28 16:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 00101178f7478f5c31cedc05de4849ae SHA-1: d71c9c705f4883899763e9884f98786976984950 SHA-256: fc3c5af2060b5fc15cdf86d391a75ef535d55f3bb3704784efe134ccf16c77ed
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only lure, typical of phishing or malware delivery, prompting the user to click a link disguised as an image. The embedded URL, https://svimn.page.link/bjCa, is a URL shortener, which is often used to obscure malicious destinations. No scripts were extracted, but the PDF structure and heuristics strongly suggest an attempt to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0046

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 18 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://svimn.page.link/bjCa 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_off00002e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E82 15352 bytes
SHA-256: 80b151c7b4c124415ba8f6e55728d329057f2b894faad31d9541fe010992d5aa

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