Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d0edfd9a2c7015…

MALICIOUS

PDF

184.8 KB Created: 2015-08-08 09:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ce29d1f7e66ca46d8f245fcc83c061ff SHA-1: 3c69d911a413739b40981f14de7b2f8a459330a2 SHA-256: c3d0edfd9a2c70153d57faeef12bc7da9516ac4d6021c0542aa6bf934bb35b9c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. This indicates the primary function of the document is to lure the user to a malicious 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-7522596-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7522596-0
  • 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%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+%D0%BC%D0%B0%D1%80%D0%BB%D1%8B+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383713_skachat_brauzer_na_telefon_nokia_5228.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383908_drunken_wrestlers_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383945_depeche_mode_delta_machine_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023eea.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EEA 3556 bytes
font_01_sfnt_off00024c6d.bin
cc5829dd05df1ce0fe6aafdacd02146e06b3994459933d417c9927562366ff48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C6D 15492 bytes
font_02_sfnt_off00027c5b.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C5B 14468 bytes
font_03_sfnt_off0002a70d.bin
9de2b1e3deb6bbc70db5ffd3593d590c5249b4037d48e9afb840a8618bb83b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A70D 6424 bytes
font_04_sfnt_off0002b93d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B93D 6084 bytes
font_05_sfnt_off0002c8d2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8D2 3752 bytes

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