Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c49ffd6d390a35c…

MALICIOUS

PDF

185.0 KB Created: 2015-07-24 09:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1645038c79bbf33f2db32564a3406bfc SHA-1: 7a51e77e83bde0f3dcc55c8dff0feee8e254491f SHA-256: 3c49ffd6d390a35c2e083292f86a2dd43d29ae9375a7af8d50635c5de408aa8e
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is designed to lead users to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious URL is sufficient to classify the document's intent as a redirection attack.

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%BD%D0%BE%D0%B2%D1%8B%D0%B9+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D1%80%D0%B0%D0%BC%D1%88%D1%82%D0%B0%D0%B9%D0%BD+2015+%D1%81%D0%BB%D1%83%D1%88%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190739_perevod_teksta_s_kartinki_s_angliyskogo_na_russkiy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188245_seosprint_otvetuy_na_zadaniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188835_skachat_maynkraft_147_s_modami_100_modov_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f7b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F7B 3556 bytes
font_01_sfnt_off00024cfe.bin
f9671de32058e5a13c5c103a46fda59b20ff74526e08669b4499e39c12c52a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CFE 14604 bytes
font_02_sfnt_off00027ae0.bin
40f0aa337a48f70e82545b6cd6b5047fc8c885654640530984c89324c7c8fc8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AE0 14700 bytes
font_03_sfnt_off0002a636.bin
8f5f9cc5e7b3b4c0987d02ecb2ffe3624c586aad109222961fc7e49fa635eb19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A636 6956 bytes
font_04_sfnt_off0002ba65.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA65 6084 bytes
font_05_sfnt_off0002c9fa.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9FA 3752 bytes

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