Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68927296662f11d…

MALICIOUS

PDF

302.7 KB Created: 2015-08-24 03:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 199396fcb63889700dec71b2cc85f2ca SHA-1: 693f3cb16ef707ab34c48c43e018ef56683780d8 SHA-256: a68927296662f11d1ee9577fd8d6fd7875d3977f5fe8f8e1af90b0de3b36ff3d
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also flagged the document as malicious. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted from this sample, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7288

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%B4%D0%BE%D1%86%D0%B5%D0%BD%D1%82%D1%8B+%D1%87%D0%B8%D1%82%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4698/4698160_rabochaya__programma__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693725_skachat__sitigid__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694157_raspisanie__uchastkovuyh__vrachey_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047208.bin
40d1f2f2d1f9d214a8ead9a53eb148d80a66b393a81fdadfe987653d0cdbebef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47208 9188 bytes
font_01_sfnt_off00048c48.bin
23baee1c31b765d78663d3edb38c3be0ea8eac07d746588ec5a96474374cd5ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48C48 14872 bytes

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