Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69916d4d12f31b7…

MALICIOUS

PDF

183.1 KB Created: 2015-07-24 07:34:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 213a002f81dec506bacd530181cbf712 SHA-1: 723413a4948e01c71f280789c0f12977c379e35a SHA-256: b69916d4d12f31b777786fbec3cb455f09c72d1def5df2d3c57522f84680a58c
152 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 malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a known malicious redirector. This suggests the document is designed to lure users to a harmful site.

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-7494690-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494690-0
  • 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=%D0%BA%D0%BE%D0%B4+%D0%BF%D1%80%D0%BE%D0%B4%D1%83%D0%BA%D1%82%D0%B0+sims+4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186828_skachat_besplatno_igru_cezar_3_na_russkom_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190000_rut_prava_na_android_411_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187857_zadaniya_po_matematike_dlya_2_klassa.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a0ad.bin
5a527a4e185b4ba3bc05f775e0abf37bc6df348eaaaa270bf96c2b9756dcd12a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A0AD 6388 bytes
font_00_sfnt_off00023b2f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B2F 3556 bytes
font_01_sfnt_off000248b2.bin
e5f5d577b974f189585ad83aaefd482aeaad24161acf2a7e62a2ff347ce8a1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248B2 14296 bytes
font_02_sfnt_off00027584.bin
600ebf9dd9e93c81c91c6d0fbc0305e88dd39b1dfcaea9b0cf3f36f9e1809811		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27584 14632 bytes
font_04_sfnt_off0002b2b6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2B6 6084 bytes
font_05_sfnt_off0002c24b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C24B 3752 bytes

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