Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda1f0fb05dac21b…

MALICIOUS

PDF

184.9 KB Created: 2015-08-05 14:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d12a231396552b93ed97186f1259c5df SHA-1: 9427cd68b7b3523fd8b30ebe83f687ef8c55551e SHA-256: eda1f0fb05dac21b8a5958b9af6b1ca827bcf9a2fcc26080e7b3130782551071
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a redirector link to known malicious infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9014438-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9014438-0
  • 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%D0%BC%D0%B0%D1%80%D0%B0-%D0%BA%D1%83%D1%80%D1%83%D0%BC%D0%BE%D1%87+%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304844_utilita_everest_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304561_skachat_igru_zelenaya_ferma_na_telefon.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304681_film_kod_da_vinchi_2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024288.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24288 3556 bytes
font_01_sfnt_off0002500b.bin
1076ad019b6d0c6981093ff62ee482d60864e85e0248cc7818fa0a14f7031d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2500B 13872 bytes
font_02_sfnt_off00027be6.bin
9c2c36520fa8b96a0bb2f6b73d3c6f7df4cd0c0f30bf51162760b0cf2f60fffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE6 14468 bytes
font_03_sfnt_off0002a697.bin
35627eaddc1118f2813524ba822cf8c765f052712e8498dd427e96561c4fbced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A697 6652 bytes
font_04_sfnt_off0002b9bb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9BB 6084 bytes
font_05_sfnt_off0002c950.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C950 3752 bytes

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