Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87b0de9ac8c31ce…

MALICIOUS

PDF

185.8 KB Created: 2015-08-08 11:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: df70b40f27dff4a28139e8b31e349f95 SHA-1: 82fcf5c03975da81e4565e60fede29f7f00573c7 SHA-256: d87b0de9ac8c31ce71c4a67f166c72597efc754d2c09ddd11567f96a033b4c90
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=3d+album+332+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%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://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387947_isscbtm_drayver_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387100_combiset_16_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386756_zip_arhivator_skachat_besplatno_dlya_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fea.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FEA 3556 bytes
font_01_sfnt_off00024d6d.bin
9c34d88defe487e36ca47b0a7ac9de86970fb676cba775e73fadae2f3871f7f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D6D 14900 bytes
font_02_sfnt_off00027b95.bin
3c4bf62ecc469ed4622b79b20316ef7832e6afe7d5afc176d9d4a6dfcc7f812a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B95 14764 bytes
font_03_sfnt_off0002a716.bin
f448294b75b9d413a6fbf360d62a3a002f5682870dc198571dd175507138313f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A716 7520 bytes
font_04_sfnt_off0002bd50.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD50 6084 bytes
font_05_sfnt_off0002cce5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCE5 3752 bytes

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