Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a825d913b0038c…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 04:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0375ba25af3206413eaf29d554ac0f1a SHA-1: 69ae6d4bef308baea56866a721ba8510d06a91c1 SHA-256: f9a825d913b0038c88e2d7f8d8a88460ca023cc088765b7f0572faa2bb9d202b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to http://botcraftman.ru/, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful destination.

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%BA%D0%BE%D0%B3%D0%B4%D0%B0+%D0%BE%D1%82%D0%BA%D1%80%D0%BE%D0%B5%D1%82%D1%81%D1%8F+%D0%BE%D0%BA%D0%B5%D0%B0%D0%BD%D0%B0%D1%80%D0%B8%D1%83%D0%BC+%D0%BD%D0%B0+%D0%BE%D1%81%D1%82%D1%80%D0%BE%D0%B2%D0%B5+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185267_volfenshtayn_2015_prohozhdenie.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184752_dnevnik_po_uchebnoy_praktike_v_otdele_doznaniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186980_fonuy_dlya_prezentaciy_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002486f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2486F 3556 bytes
font_01_sfnt_off000255f2.bin
12f707bd952c7186a7f6cbc79d6fdad6e925ba1bb7b82a03a999630d58e4b7ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255F2 14848 bytes
font_02_sfnt_off00028452.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28452 14468 bytes
font_03_sfnt_off0002af05.bin
070c890adfe4a12d727061afdffeb081fd5f2ef2b8e83a05856bd411d58496a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF05 6652 bytes
font_04_sfnt_off0002c212.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C212 6084 bytes
font_05_sfnt_off0002d1a7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1A7 3752 bytes

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