Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a51d01e9b09f6e…

MALICIOUS

PDF

184.9 KB Created: 2015-07-26 09:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 296b2d1dadc9c09187db3806d3e3eb56 SHA-1: c06c6ff454aefa0d787b064361ca06f2d485d175 SHA-256: 78a51d01e9b09f6e8745b6129668024975be2b4ee194103f599a974a22359f4c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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%B0%D1%81%D0%BA%D0%B5+%D0%B8+%D1%81%D0%B0%D0%BA%D1%83%D1%80%D0%B0+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D1%84%D0%B0%D0%BD%D1%84%D0%B8%D0%BA%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194157_pci_ven_1039_dev_7012.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4209/4209811_nyensi_dryu_zakoldovannaya_karusel_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185699_skachat_muzuyku_besplatno_nyusha_vse_albomuy.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024104.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24104 3556 bytes
font_01_sfnt_off00024e87.bin
a0d8965cd353dbdaf560198ee5c99ed2202dd01f387c2ee0fad3a746b1016ca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E87 14956 bytes
font_02_sfnt_off00027ceb.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CEB 14468 bytes
font_03_sfnt_off0002a79e.bin
8aee4caace8ce27926eb4fc36b320cbba67a76da3f386c8ffc804db98f29ada3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A79E 6408 bytes
font_04_sfnt_off0002b9d4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D4 6084 bytes
font_05_sfnt_off0002c969.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C969 3752 bytes

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