Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ec805ef3955f1f…

MALICIOUS

PDF

185.5 KB Created: 2015-07-24 11:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eb140adcf57a09827c389ace5dc7356e SHA-1: f37f6781cd4c02b780806c93d658ae04484d6b0d SHA-256: c8ec805ef3955f1f5883f7bdafd31797eea11aba52afe1b1ddfcfc83b7f44d28
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 linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious activity, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not parsable.

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=dialux+evo+%D1%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189900_skachat_igruy_cherez_torrent_assasin_krid_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185267_volfenshtayn_2015_prohozhdenie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191783_deklaraciya_3_ndfl_2013_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002418e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2418E 3556 bytes
font_01_sfnt_off00024f11.bin
159017a292320d458c6d7b933fde1ce51e83f3c638dbafb70c842b6f02476b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F11 14712 bytes
font_02_sfnt_off00027c6a.bin
58a7d80aebcc97f3c3159a5bd6f0cdabfd081f24828a79d297c2f1e89450440a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C6A 14716 bytes
font_03_sfnt_off0002a7f2.bin
e7e93b5047627f3f1ee970c1b1bb376e5a14521f0a310e6e3c322e8c5e88f39e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7F2 6920 bytes
font_04_sfnt_off0002bc0a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC0A 6084 bytes
font_05_sfnt_off0002cb9f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB9F 3752 bytes

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