Malicious PDF — malware analysis report

Static analysis result for SHA-256 32233084183ddd7e…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 11:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d5dbd8d7ca81430b20b476eca9349124 SHA-1: 6e5b896e61fd92c7b7b363e083334ff0a452bff1 SHA-256: 32233084183ddd7ead720a101ded23f16dc46891595e41de0e9eb9f1f137214e
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, and the document body was truncated, limiting further analysis of the exact lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+7+days+to+die+alpha+77+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185678_maroon_5_diskografiya_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185046_rabochaya_programma_po_tehnologii_58_klassuy_simonenko_malchiki.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187317_kviddich_s_drevnosti_do_nashih_dney_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a6e3.bin
1390f84cb768a4c7549a63b39260a38fc38a0755e2a4b0dae1889fc5ada1503c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A6E3 7460 bytes
font_00_sfnt_off0002404e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2404E 3556 bytes
font_01_sfnt_off00024dd1.bin
b91dde46da2cebedb918febba6f803f7d9d95d47df7f16679450c23df666761b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DD1 14832 bytes
font_02_sfnt_off00027b7d.bin
967656c6e219b9b2567df29ee642a2636f1905303c8abee7da200fca01c2fb42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B7D 14724 bytes
font_04_sfnt_off0002bcbb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCBB 6084 bytes
font_05_sfnt_off0002cc50.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC50 3752 bytes

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