Malicious PDF — malware analysis report

Static analysis result for SHA-256 b450ce4bb580815d…

MALICIOUS

PDF

360.9 KB Created: 2015-08-24 03:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c1dd52adffd5a3ba5d6f26278a8638c5 SHA-1: 980ca2db6a1d305f8406dc77399cd0c70329c5c2 SHA-256: b450ce4bb580815db483229cd40c24ad8f843f132a882232bae6e41d97424244
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D0%BA%D0%BE%D0%BD%D1%86%D0%B5%D1%80%D1%82+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693392_itogovuyy__test__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696030_ozvuchit__tekst_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695383_igra__prestolov__3_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055b51.bin
63d00ef77c4b89b5531692de81f226fef3d72f185abe6afbd7f3c9ea5e574201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B51 10120 bytes
font_01_sfnt_off0005776d.bin
0be64aa9e3385bb2e10136a7a018263204cb45a5b8ed131a22e2c34ea3364998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5776D 14004 bytes

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