Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3b67bb1e63938b…

MALICIOUS

PDF

184.1 KB Created: 2015-07-25 02:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dfcea05d741c702fc9e300c6e99d8bd6 SHA-1: 68b2aa7a123975c0fc66bc07ecd3f6cc6933be47 SHA-256: fe3b67bb1e63938b4259e62f34eeb5a02348eab3061dd4e51f8c585b2fc9a663
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL points to a known malicious redirector, indicating the document's primary purpose is to lure users to a dangerous site. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of malicious intent.

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-8790671-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790671-0
  • 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%B0%D1%80%D0%BC+%D0%B7%D0%B2%D0%B8%D1%82+%D0%BE%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193176_skachat_gruppu_rozhdestvo_vse_albomuy_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187730_tam_vuysoko_vuysoko_ktoto_prolil_moloko_tekst_pesni.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185464_skachat_maynkraft_zombi_apokalipsis_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d86.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D86 3556 bytes
font_01_sfnt_off00024b09.bin
e0820e0bc90ed6c17c1bcf32b8883c77d7ea1579255c96d91bdfd7ba0ca1f471		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B09 14332 bytes
font_02_sfnt_off00027809.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27809 14468 bytes
font_03_sfnt_off0002a2bb.bin
6317dde77b54ffbab5d4f7589a5c7cbe001cde73ee6514d92dd05e8bc8f2fe3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2BB 6908 bytes
font_04_sfnt_off0002b6b3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6B3 6084 bytes
font_05_sfnt_off0002c648.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C648 3752 bytes

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