Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0cfb68dce27f7b…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 20:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 153dc7c9f41aa16deb3e6d8ecb683ccf SHA-1: 7616adaffa4302342715b2d82af38cfd5ce7fd6b SHA-256: bc0cfb68dce27f7b1f1e46f87fc6f2d167b3ae45eca98f64bf432b70ae859dea
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 identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link is sufficient evidence of a phishing or redirection attempt.

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%B4%D0%B8%D0%B0%D0%B1%D0%BB%D0%BE+3+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184598_need_for_speed_nitro_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184535_dina_rubina_belaya_golubka_kordovuy_skachat_besplatno_fb2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244ca.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244CA 3556 bytes
font_01_sfnt_off0002524d.bin
e6723fd323d4c3ca5bc5ddf056107fe350ab3cca7dd8bbd71eec4bcca7c9c640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2524D 14548 bytes
font_02_sfnt_off00027fd8.bin
8fcb0373def2089f4050d604114efab1fb90fd41090bcaab965e0072af246115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FD8 14468 bytes
font_03_sfnt_off0002aa84.bin
cdc1081ee1775c3bd51e7188ccb50f4efd02888ff2d00626a7e4a286cdb51cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA84 7180 bytes
font_04_sfnt_off0002bf83.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF83 6084 bytes
font_05_sfnt_off0002cf18.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF18 3752 bytes

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