Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c269ada990bb99…

MALICIOUS

PDF

185.7 KB Created: 2015-07-24 13:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e2cce68057cac2089c87fdb577996e06 SHA-1: a8cb3513c1f768a48eb3d1df038521eba87efce1 SHA-256: f5c269ada990bb99643b960c2d673cc1ae5310c420fdc4cea4211e944b3b5d4d
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 link to known malicious redirector 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. This suggests the document's primary purpose is to lure the user to a harmful website.

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-7527151-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7527151-0
  • 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=battlefield+4+naval+strike+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191902_boing_777_200_shema_salona.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191617_application_load_error_5_0000065434_kak_ispravitzip.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185168_skachat_porno_foto_hd.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a795.bin
cca91e907ece0189c46d2c215bed52a2c05dd9e7ba9fcb5a1eeff99d1c85ab54		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A795 7296 bytes
font_00_sfnt_off00024008.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24008 3556 bytes
font_01_sfnt_off00024d8b.bin
55f0051551eedc9fe3c7bf0cb57b89218c3d165fe49351d8ed04be73ba5a9d1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D8B 15124 bytes
font_02_sfnt_off00027bf6.bin
a60aa6df170345c5fa4a4ac755bdc7c799b4bfd3229c47f53e16752e332fffab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BF6 14724 bytes
font_04_sfnt_off0002bcf5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCF5 6084 bytes
font_05_sfnt_off0002cc8a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC8A 3752 bytes

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