Malicious PDF — malware analysis report

Static analysis result for SHA-256 31de600121497a3e…

MALICIOUS

PDF

365.2 KB Created: 2015-08-29 11:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ef6186bf6b2a711ec446ec0813c21e63 SHA-1: 278caf0f7aa056243f2e66bf21e61263bf2ac9f0 SHA-256: 31de600121497a3e68dd2af19cc3bf8c69a81ae1c48c5fc4c53ea8ff5d8108f0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious infrastructure, indicating an attempt to redirect the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://botcraftman.ru/?lip&keyword=skyrim+xbox+360+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+lt+30&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829879_kak__poluchit__vip_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829964_skachat__klyuch__k_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830037_prikaz__po_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567cd.bin
24e3772679ce29da79c04d012009b0fd036f467589b05019a9d9139d4ba93056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567CD 10408 bytes
font_01_sfnt_off00058578.bin
26b728feaa4b058c0d4fae29ec36a13bfabbe464a173c55cddeb3f7a835f0a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58578 15452 bytes

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