Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd9787f11ca418d…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 07:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 28b010c72754df0e0031954c0fdc768a SHA-1: 6f5b39deaba1e85f9962a080d887b0fcc9b923ac SHA-256: 8bd9787f11ca418d17a8f1dce2719e6a888c01dbd1c4f80d4816e8877ad0aced
92 Risk Score

Malware Insights

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

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, and the document body was not parsable.

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D1%83%D1%81%D0%B8%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B7%D0%B2%D1%83%D0%BA%D0%B0+%D0%BD%D0%B0+%D0%BD%D0%BE%D1%83%D1%82%D0%B1%D1%83%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187485_kommercheskaya_smeta_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186853_novokuybuyshevsk_raspisanie_trolleybusov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189944_dc_dimension_3d_vst_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246e9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246E9 3556 bytes
font_01_sfnt_off0002546c.bin
dc1fb8f451222775f0a22b7624263afb9c04f06406428b417192e91bdbdd236d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2546C 14516 bytes
font_02_sfnt_off0002823e.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2823E 14468 bytes
font_03_sfnt_off0002acf0.bin
49b4b8c5a67d655d048e8f5e6f22d6e95c72514bb4e9241b9215350e7f16d0f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACF0 7172 bytes
font_04_sfnt_off0002c1e4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1E4 6084 bytes
font_05_sfnt_off0002d179.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D179 3752 bytes

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