Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f76767deaffcab2…

MALICIOUS

PDF

186.7 KB Created: 2015-08-05 15:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 07f18b76e272df56003c4eb12b232b70 SHA-1: f5df1d8b0a458e91858fadf5c44da31c5e859641 SHA-256: 4f76767deaffcab20c4fcf298d29de9adcf471e5f1a019ec00f2f8f365ce82fa
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 linking to known malicious redirector infrastructure. The ML classifier also strongly indicated 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, and the document body was truncated, limiting further analysis of the 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=%D0%B7%D0%B0%D0%B4%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BE%D0%BB%D0%B8%D0%BC%D0%BF%D0%B8%D0%B0%D0%B4%D1%8B+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+6+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305379_kursovaya_rabota_po_pediatrii.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305252_skachat_nba_2k_13_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305443_yeffekt_bogarne_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245b4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245B4 3556 bytes
font_01_sfnt_off00025337.bin
226cf2f358b6ead9c95fdd1a443f2583e74cd4ea2e2801975a03b2371f1763ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25337 15104 bytes
font_02_sfnt_off000281de.bin
db84ffe2d36e90787b3bf12420b8e9ab17b3e2be89482e203cc8603cadecb7ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281DE 14720 bytes
font_03_sfnt_off0002ad4b.bin
e53c7d2fc0025b2f86bb94579899a317be12e35d9f45b35fdd98d56fca6d54c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD4B 6792 bytes
font_04_sfnt_off0002c0cf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0CF 6084 bytes
font_05_sfnt_off0002d064.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D064 3752 bytes

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