Malicious PDF — malware analysis report

Static analysis result for SHA-256 f288caa375eda5e7…

MALICIOUS

PDF

186.8 KB Created: 2015-07-25 19:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1a0179bc7855e0a7401347005492a316 SHA-1: 8d9ab24329aae078fb3dea0247f9a60700490e2c SHA-256: f288caa375eda5e75c9a92251b38aeda07c4ca27db2f59443c141aeab6bb1894
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF was flagged by a critical heuristic for linking to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+java+7+update+45+%D1%82%D0%B5+170_45+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204416_kazni_puytki_izdevatelstva_chechenskih_boevikov_nad_russkimi.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202814_kompleksnuyy_analiz_teksta_8_klass_nikulina_otvetuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197784_yetnologiya_sadohin_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241da.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241DA 3556 bytes
font_01_sfnt_off00024f5d.bin
9fca1d44d9b786510e1197d8440abfa7a518b270c1db96bc787293cb5d420110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F5D 14908 bytes
font_02_sfnt_off00027d96.bin
93e63940a9d97fae23b4ec72a278fa0e70575482c1feb3f213c6a7e166adc6c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D96 14980 bytes
font_03_sfnt_off0002aa0a.bin
5e0881ed60dacaa51c3a17d43cbee72905b4159db6b366a37fb88c1e17648b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA0A 7792 bytes
font_04_sfnt_off0002c144.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C144 6084 bytes
font_05_sfnt_off0002d0d9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0D9 3752 bytes

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