Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22cc8fd845dca05…

MALICIOUS

PDF

185.0 KB Created: 2015-07-27 08:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 341791cea192da6ca9fe30bfeb98c571 SHA-1: 4233f7eae4d9bb41a1807b0fdb52a4cb564ae90c SHA-256: a22cc8fd845dca05e18faa16afe9da35b93ba69a36151a22f7e3eaed4c33dde3
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 unreadable, limiting further analysis of the specific lure.

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%94%D0%B5%D0%B2%D0%BE%D1%87%D0%BA%D0%B0+%D1%81%D0%BE%D1%81%D0%B0%D0%BB%D0%B0+%D1%83+%D0%BC%D0%B0%D0%BB%D1%8C%D1%87%D0%B8%D0%BA%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191894_magnitola_pioneer_mosfet_50wx4_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220382_memorialnuyy_order_blank_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4208/4208499_skachat_skayrim_so_vsemi_modami_i_dopolneniyami_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024200.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24200 3556 bytes
font_01_sfnt_off00024f83.bin
f7635a123c5627d6ebdb235636ad3ffccf06912f9c799dd9461a2ba333e38e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F83 14668 bytes
font_02_sfnt_off00027d4c.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D4C 14468 bytes
font_03_sfnt_off0002a7fe.bin
6ce4c96d9ecbf20be607ec638afd0c84a000d7171709216b6a5cfccd256a0d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7FE 6376 bytes
font_04_sfnt_off0002ba18.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA18 6084 bytes
font_05_sfnt_off0002c9ad.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9AD 3752 bytes

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