Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e861d7db94d05f9…

MALICIOUS

PDF

360.7 KB Created: 2015-08-29 11:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b62c28dd275084df1f7c7030decbe6a6 SHA-1: d08c91b579440146ec9be6c2b6e7f263182a18e5 SHA-256: 2e861d7db94d05f9f339967518173a26a75838f18ca96953a5fcba6f7df5d62e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to botcraftman.ru. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=msi+u160+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829932_scenariy__prazdnika__den_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830046_teoriya__ogranicheniy__goldratta_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829837_amitrazin__dlya__sobak_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055bc7.bin
ccb54e3e90660c2305a2da3658801da2c0605c0583e7a43dd2ed36b7c184a760		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55BC7 8540 bytes
font_01_sfnt_off000574d4.bin
b779ca9f853a447d0279a430ee7861f827d8f4317da8d8a9c5ac5b72e39b7d15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574D4 14812 bytes

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