Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb487e9ce51d5ee…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 05:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9d5f994b943754fc32d429afdb710de2 SHA-1: f9f08ec6ccfdbc515eddb6c074b91c8880e9660c SHA-256: 9bb487e9ce51d5ee69a75f2b6bd09592c4cbaf57e9a6e8bfe55f050ff1cb5207
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 a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/ is likely part of a phishing or malware distribution chain. No scripts were extracted, limiting further analysis of the payload.

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=%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%81%D0%B0%D0%B9%D1%82+world+of+tanks+%D0%BC%D0%BE%D0%B4%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193371_pochetnaya_gramota_blank_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195759_sims_freeplay_skachat_na_kompyuter_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191600_katya_sambuka_porno_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a878.bin
c312ba9dec779045f1adc196f98a6a172f53b44cc04126ef4c325409f7403ce5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A878 7492 bytes
font_00_sfnt_off0002423c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2423C 3556 bytes
font_01_sfnt_off00024fbf.bin
53c6c1546dae43507b16bc60a89fc58fa2ad8fae4f7e250d666b5bf12f300d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FBF 14512 bytes
font_02_sfnt_off00027cd2.bin
6e4af140ebad63e88a0112061f17afd0e4cdbe292f1f862277c2a8850fde8607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD2 14748 bytes
font_04_sfnt_off0002be8c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE8C 6084 bytes
font_05_sfnt_off0002ce21.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE21 3752 bytes

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