Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bba8e0acca28dd4…

MALICIOUS

PDF

6.6 KB Created: 2021-08-29 10:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1c29050eb34eb6d4a910695658b1c130 SHA-1: d1ee5d9ccf93d1afeeef29ab940110bcd5144d36 SHA-256: 3bba8e0acca28dd40de8c951b34adc42fd950e83c54bcd121f9167386ec23d61
64 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4980

Heuristics 4

  • Image-only PDF lure links to a deceptive (typosquat) host high PDF_IMAGE_LURE_DECEPTIVE_HOST_LINK
    PDF is image-heavy with little real text and its clickable action targets a host that impersonates a security/service/brand word with a look-alike homoglyph substitution — a digit OR a confusable letter (e.g. 'serv1ce', 'servlce', 'upd4te', 'm1cr0s0ft') — on a domain that is not a known-good site. This is a credential-phishing / fake-update carrier shape: a screenshot-like page funnels the victim to a deceptive look-alike destination.
  • 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 6 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://aignatenko.updta78-serv1ce.info PDF link annotation
    • http://www.microsoft.com/typography/fonts/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14 3232 bytes
SHA-256: e8e642ce397ed383e3fceba8654601d8839484b5c154d694af2ebdf0bb44a27a