Malicious PDF — malware analysis report

Static analysis result for SHA-256 78452a669e5027be…

MALICIOUS

PDF

362.0 KB Created: 2015-08-29 03:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 341685a261ba2621f1c9bf6a86ab8dc0 SHA-1: 18f685728fd9221549e07380d33cf648b9cfe4aa SHA-256: 78452a669e5027befe8ed62c5869a455f60b625d573dcf70902708383dc68a1d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. The embedded URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a harmful site. No scripts were extracted, but the presence of a malicious URL is sufficient to classify the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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=%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%BF%D1%80%D0%BE%D0%B2%D0%B5%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D1%8E%D0%B1%D0%B8%D0%BB%D0%B5%D1%8F+35+%D0%BB%D0%B5%D1%82+%D0%BC%D1%83%D0%B6%D1%87%D0%B8%D0%BD%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818346_mechi__i__sandali_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817565_11x11____nastoyaschiy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817863_notuy__dlya__fortepiano_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000560a3.bin
6f54d983eeccff04f05358818457b3ec412344c1c116c82623706de64c93bef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560A3 8984 bytes
font_01_sfnt_off00057ae9.bin
9b134f1c21292fbcab42bc8fe612d17da39362f8327fb10d9dd35aec5b50e190		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57AE9 14472 bytes

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