Malicious PDF — malware analysis report

Static analysis result for SHA-256 250786339700ab27…

MALICIOUS

PDF

187.7 KB Created: 2015-07-25 23:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 295d5ebdaf4fe6bd50c27670e982e5a2 SHA-1: 604f78ac1eb524d7afa4e5b03d4f513de7d94f51 SHA-256: 250786339700ab27c5968236235164a9285a39a44cc34fb9b77d53b22e477bdd
92 Risk Score

Malware Insights

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

The PDF document 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, http://botcraftman.ru/..., is the primary indicator of compromise. This suggests the PDF is used as a lure to redirect users to a site that likely hosts further malicious content or phishing forms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%B5%D0%BA%D0%BB%D0%B0%D1%80%D0%B0%D1%86%D0%B8%D0%B8+3+%D0%BD%D0%B4%D1%84%D0%BB+%D0%B7%D0%B0+2013+%D0%B3%D0%BE%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198203_skachat_egye_po_matematike_2015_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199340_trafaretuy_dlya_brovey_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195505_kassandra_klyer_gorod_praha_fb2_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000249b3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249B3 3556 bytes
font_01_sfnt_off00025736.bin
d8f808aca5047773c9cbdbd55db2efe78d6019e1c8530ccfa1d70bf433c84409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25736 14472 bytes
font_02_sfnt_off000284bb.bin
60606b2f0b1871c6768649c98432e538b779a43a0364069c8ef2e28184569cf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284BB 14468 bytes
font_03_sfnt_off0002af67.bin
53e602ac5d112920aabd4a2d46d03cd66aade37966d5752c18f488805c3d48b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF67 7344 bytes
font_04_sfnt_off0002c510.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C510 6084 bytes
font_05_sfnt_off0002d4a5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4A5 3752 bytes

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