Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d96a3fe8a8f79b…

MALICIOUS

PDF

187.7 KB Created: 2015-08-03 15:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 09e391e16ba1cd0a659bd63c225c7901 SHA-1: 0a1de496149b27b81b7ad37de365c5dcbacefe9c SHA-256: c8d96a3fe8a8f79bf77baca53ea8bbf519520a1918bd7eefb86512136f94a2dc
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was not sufficiently readable to determine a specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%BA%D0%BE%D1%80%D0%BE%D1%82%D0%BA%D0%B8%D0%B5+%D0%BC%D0%B5%D0%BB%D0%BE%D0%B4%D0%B8%D0%B8+%D0%BD%D0%B0+%D0%B7%D0%B2%D0%BE%D0%BD%D0%BE%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4216/4216234_skachat_sabvey_serf_torrent_na_telefon_sensornuyy_samsung.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4226/4226902_porno_3gp_na_telefon.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4279/4279273_torque_pro_na_russkom_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b8a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8A 3556 bytes
font_01_sfnt_off0002590d.bin
9e08678f6dadc21a99ae4577e91e81b850085ef4eae65f75ef9839b7862bce1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2590D 14888 bytes
font_02_sfnt_off00028768.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28768 14468 bytes
font_03_sfnt_off0002b21a.bin
8cbc40f605c0c98361a94546ba37e33b88ed4d7b8c518ddb7ac907120a6b2efe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B21A 6636 bytes
font_04_sfnt_off0002c52d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C52D 6084 bytes
font_05_sfnt_off0002d4c2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4C2 3752 bytes

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