Malicious PDF — malware analysis report

Static analysis result for SHA-256 781ae48cb1c528ac…

MALICIOUS

PDF

8.6 KB Created: 2021-08-21 10:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1dbe40e41156e9f02637951c9ba5126a SHA-1: 5c4c6442569323bfeb46d3326da077b71e239333 SHA-256: 781ae48cb1c528ace832f2771af86546c09505f692bfaa5cb0858cf7444c6d48
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document with an action trigger, typical of a phishing lure. It contains a single external URI pointing to 'http://evamed.premmise.ru', which is flagged as suspicious. The ML classifier also flagged the PDF as malicious, supporting the suspicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5533

Heuristics 3

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 8 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
    PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
  • 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 http://evamed.premmise.ru 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_off00000f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

Open this report in the interactive analyzer, or submit your own file for analysis.