Malicious PDF — malware analysis report

Static analysis result for SHA-256 57432086fe90c726…

MALICIOUS

PDF

184.3 KB Created: 2015-08-05 17:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a18d17866e9ed15fe7e1af00075f4639 SHA-1: e406558782a4a007f8080fde93a0b0296af33168 SHA-256: 57432086fe90c726cbf1cdfd8fc188d39019f071b0a4b0ede014bf25737081c6
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted from this sample.

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+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BF%D1%80%D0%BE%D0%BC%D0%B5%D1%82%D0%B5%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305833_skachat_igru_survival_kraft.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305405_skachat_indikator_trend_swatsh.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306122_minecraft_c_modami_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fd5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FD5 3556 bytes
font_01_sfnt_off00024d58.bin
bab4f4874f6b5db7c6a136deed4615b45b8ff29046e51b052963650096a003de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D58 14848 bytes
font_02_sfnt_off00027b03.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B03 14468 bytes
font_03_sfnt_off0002a5b5.bin
f747273226d0e2767ef7b14c49581dd39cec8c27b53470ffa8fd64ea1c7d1588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5B5 6300 bytes
font_04_sfnt_off0002b784.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B784 6084 bytes
font_05_sfnt_off0002c719.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C719 3752 bytes

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