Malicious PDF — malware analysis report

Static analysis result for SHA-256 394955b388d100a8…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 11:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9900a85b555245a10080651990cf987a SHA-1: 0fd196ee87519c5fbbf47b9246cf67491f0a67dc SHA-256: 394955b388d100a8d6f342f5a656bb85cff56ab63d38faf70b2dc99446e57c7b
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 strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirectors. 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=%D0%BC%D0%B5%D1%80%D0%BB%D0%B8%D0%BD+6+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191321_oformlenie_otryadnogo_ugolka_v_lagere_shablonuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187033_kak_skachat_chit_na_kontra_siti_na_kontrobaksuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188006_sobaka_ebet_babu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024046.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24046 3556 bytes
font_01_sfnt_off00024dc9.bin
35f9a145fd8f97b2cadbe2a010c22e72c1364e909c3372d0f95515faafa14049		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DC9 14592 bytes
font_02_sfnt_off00027b94.bin
426ba1c2444564d56b65c3f7625fac8ddd7f3cd5f8f03af3fb0f694004da5b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B94 14468 bytes
font_03_sfnt_off0002a64b.bin
4de4f94a9116c892ab044983c0a2bca31e66e3be6f9b9a1e89f919da68a60c5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A64B 6496 bytes
font_04_sfnt_off0002b8cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8CB 6084 bytes
font_05_sfnt_off0002c860.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C860 3752 bytes

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