Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6f2aa3e85988d1…

MALICIOUS

PDF

375.0 KB Created: 2015-08-29 01:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1fdf8df68df5f4178959629eaa39e497 SHA-1: 490b8171ba50a35f484d4f9f0a6639c8f67b3a37 SHA-256: ba6f2aa3e85988d1c71711c556d7f503776f0499d7d108ebe23f42bdd7d7c7b0
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 containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. No scripts were extracted, but the presence of a malicious redirector link strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BD%D0%B8%D0%B3%D1%83+%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%B0%D1%8F+%D0%BF%D0%B0%D1%81%D1%85%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817633_skachat__gineklogiya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817713_olimpiadnuye__zadaniya__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817914_krasivuye__devushki__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059760.bin
ec65b252330faf468e3360b64f1e9d2d79b65c892674bd10aa83172b24385a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59760 7668 bytes
font_01_sfnt_off0005adac.bin
2a221a92fc2945a24235a459cf55e43f6f09a7d62d6c547b90babf1d648c26cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADAC 14852 bytes

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