Malicious PDF — malware analysis report

Static analysis result for SHA-256 5524ea2848742eb3…

MALICIOUS

PDF

185.9 KB Created: 2015-07-27 05:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9ee08efa354a5f1798d5d0f263e3c8a5 SHA-1: a5b2fd0dbb07e2391c77a6027315d06f91e2bbca SHA-256: 5524ea2848742eb33a1debb7311c198c09e9f807d0baa6017a585a1fd86c31ed
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 to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated.

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%BE%D0%B1%D0%B6%D0%B0%D0%BB%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D0%BF%D1%80%D0%BE%D1%82%D0%BE%D0%BA%D0%BE%D0%BB%D0%B0+%D0%B3%D0%B8%D0%B1%D0%B4%D0%B4+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4217/4217837_mount_and_blade_warband_good_mod_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4222/4222644_skachat_bazu_dannuyh_vkontakte_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194199_dx11_capable_gpu_to_play_crysis_3_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002448b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2448B 3556 bytes
font_01_sfnt_off0002520e.bin
a301c53492910cb918671d6b5030feb01f8ee43b9d5b32635fb61baea151e3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2520E 14720 bytes
font_02_sfnt_off00027f84.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F84 14468 bytes
font_03_sfnt_off0002aa33.bin
1bcbfd98858f787e48e12bd75542c13845c6b122f1350236e3a275a9aecd53d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA33 6876 bytes
font_04_sfnt_off0002bdf7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDF7 6084 bytes
font_05_sfnt_off0002cd8c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD8C 3752 bytes

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