Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ef386c6505bca9…

MALICIOUS

PDF

185.8 KB Created: 2015-07-24 04:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 27f2d089a457bc822e08d5c528f22b3b SHA-1: f2a4f9e4c664281e5f6177b17e03fc02d0214487 SHA-256: 89ef386c6505bca96aa6789065e442533e57977f9845f9376f2d7d55bd5f60f4
92 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 specific 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+uniblue+driverscanner++%D0%BA%D0%BB%D1%8E%D1%87&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187747_rabochaya_programma_po_russkomu_yazuyku_5_9_klass_laduyzhenskaya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186533_skachat_chit_na_point_blank_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186643_scenariy_svatovstva_so_storonuy_nevestuy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a93e.bin
26695c2d2fbe75e76cdc4c0501b0db67e8825b1e9dcd87f123d80213e76a128c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A93E 6988 bytes
font_00_sfnt_off000242aa.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242AA 3556 bytes
font_01_sfnt_off0002502d.bin
db693e020bc025d43eee799fd2d4c4a1e19b91483c8db2493a19ece81ac31c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2502D 14804 bytes
font_02_sfnt_off00027dfe.bin
e499538c60573924222303e711f59ef67ee3b8b5edebf6409b744731c58fe308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DFE 14648 bytes
font_04_sfnt_off0002bd92.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD92 6084 bytes
font_05_sfnt_off0002cd27.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD27 3752 bytes

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