Malicious PDF — malware analysis report

Static analysis result for SHA-256 87b93e67ca836da3…

MALICIOUS

PDF

187.6 KB Created: 2015-08-08 10:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 978d02efac328cc3d801de36d3ff321d SHA-1: 48a40ca48b366255b8b67e62c75675b2ec06f713 SHA-256: 87b93e67ca836da328142cdba9719fe98c04e173f9c0cf87474751efbe73a481
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 assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted from this sample, 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=%D0%B8%D1%81%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B5+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+5+6+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384054_aktivator_windows_7_7601_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384858_skachat_baza_dannuyh_kievstar.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383893_pricheski_dlya_fotoshopa_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002498e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2498E 3556 bytes
font_01_sfnt_off00025711.bin
ccf7dca6b0b611969c05d7a6769244ddb72658d811ff1cf481d243fa970216db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25711 14736 bytes
font_02_sfnt_off0002856f.bin
899a3053da957a4061eafaa00fc273f8f7b6b8e97d6551547921a5ab43e56ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2856F 14640 bytes
font_03_sfnt_off0002b0a4.bin
c002688a053d3e4f64d5b5794557f9632a4d7e622b568225eb3cdfcfbf8df65f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0A4 6916 bytes
font_04_sfnt_off0002c49c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C49C 6084 bytes
font_05_sfnt_off0002d431.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D431 3752 bytes

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