Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0566270de78df5…

MALICIOUS

PDF

62.3 KB Created: 2018-06-27 14:49:27 Authoring application: Qt 5.5.1 First seen: 2021-10-26
MD5: 3f3fb3b1545204b4724b9834e3f41e16 SHA-1: 768b114115a11e06f6c40da137ce0ee85941b393 SHA-256: 4f0566270de78df50c82daa135bac90978723c69c9e9585c3de148a5ae635e39
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links that are designed to be invisible to the user. These links direct to external URLs, indicating an attempt to download a secondary payload. The heuristic 'PDF_REPEATED_PAYLOAD_LINK_LURE' strongly suggests this malicious behavior.

Machine Learning

  • Nyx PDF Classifier clean score 0.0049

Heuristics 2

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked 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 http://maitravamde.dietaforlove.ru/?dt&keyword=indijski+filmovi+hindi+-+online+filmovi+sa+prevodom+-+ludk+site&charset=utf-8&source=weebly.com In PDF document text
    • http://maitravamde.dzeroki.ru/?dt&keyword=indijski+filmovi+hindi+-+online+filmovi+sa+prevodom+-+ludk+site&charset=utf-8&source=weebly.comIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC473 1440 bytes
SHA-256: 618532b2b63605606933cfd58ddc9c315380c32578cccb08d7e0d56cac08e209
font_01_sfnt_off0000cbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBEB 13860 bytes
SHA-256: 15fe4ddab4bcb38f166b8bc4dfa81b6f0368a7077dc6050449e9aece64270fb5