Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea346f5a2a522a8…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 10:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ba526668f311c1680b27ac5c4cae00d6 SHA-1: 518a8bdd4deb481f237cbe43d43737069698ee47 SHA-256: eea346f5a2a522a84f71a479871d736d142104dbb3c41e40df4c0aba304d7bf6
90 Risk Score

Malware Insights

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

The PDF 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 intent, likely serving as a lure to a phishing or malware download page. 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=%D0%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B0+%D0%BD%D0%BE%D0%BA%D0%B8%D0%B0+%D0%BB%D1%8E%D0%BC%D0%B8%D0%B0+920+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384993_zacharovannuye_1_sezon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384926_fotkatsya_cherez_veb_kameru_s_yeffektami.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385607_moya_staya_tekst.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002418f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2418F 3556 bytes
font_01_sfnt_off00024f12.bin
3feff55442ca59fd1b2085f090928410857f7a8cb02c53fd4af6c82388f62b65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F12 14260 bytes
font_02_sfnt_off00027be8.bin
29bc920990d30bd39c843184146996dd5ff382478f2013b76c079bdb9ba81f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE8 14468 bytes
font_03_sfnt_off0002a69e.bin
c9c65af40bc5fc0215e16b8259a3f3c2c3e719960f228fc83ac861afb5333733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A69E 7072 bytes
font_04_sfnt_off0002bb24.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB24 6084 bytes
font_05_sfnt_off0002cab9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAB9 3752 bytes

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