Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cecfcb516046e3e…

MALICIOUS

PDF

188.5 KB Created: 2015-08-08 09:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2bf9c03ad96c77b0d0d43e7f8463f065 SHA-1: d3e9508223be0a33f7b2aa3e9648e987f95ad1e6 SHA-256: 3cecfcb516046e3e0b7f3b0a74d39ee07dbc823600a8893833a8103a73ab7be8
92 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 known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirectors. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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%82%D1%80%D1%83%D0%B4%D0%BE%D0%B2%D0%BE%D0%B9+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D1%81+%D1%84%D0%B8%D0%BD%D0%B0%D0%BD%D1%81%D0%BE%D0%B2%D1%8B%D0%BC+%D0%B4%D0%B8%D1%80%D0%B5%D0%BA%D1%82%D0%BE%D1%80%D0%BE%D0%BC+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+2014&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384033_skachat_igruy_cherez_torrent_besplatno_na_kompyuter_uaz_4h4.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383929_zvuki_skachat_besplatno_mp3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384142_skachat_css_v34_no_steam_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024cb7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB7 3556 bytes
font_01_sfnt_off00025a3a.bin
9554fe1747fd2a31734279e96934092274ef13ed74b00e8d1707144c68929cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A3A 14508 bytes
font_02_sfnt_off00028775.bin
bf4b3978e14bbbd0e3f2ad41b5a90ef736f605303fadd5b64ad15b8efa12f7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28775 14468 bytes
font_03_sfnt_off0002b229.bin
85473f3f128eb8ef597ce2d65571052a5c473f861a3d51a991d242fde98568f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B229 7432 bytes
font_04_sfnt_off0002c808.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C808 6084 bytes
font_05_sfnt_off0002d79d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D79D 3752 bytes

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