Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c52f21a7e8a4604…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 00:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d83ef1e3aee7ba001394abdfacaa5c20 SHA-1: e7a19f52d410f34c21f0e4b1058298eb4f2186d4 SHA-256: 2c52f21a7e8a460422fd3bd995df0cdfb944cc314a846b61cde227d8c199d69a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document was flagged by multiple heuristics as malicious, including a critical finding for a redirector link to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of a downloader or droppper attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8786313-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786313-0
  • 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=%D1%86%D1%82+%D0%BF%D0%BE+%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8+%D0%B1%D0%B5%D0%BB%D0%B0%D1%80%D1%83%D1%81%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184509_disk_avtoshkola_maash_2015_23_versiya_skachat_besplatno_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185049_skachat_mod_na_maynkraft_164_na_mobov.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184819_pripyat_3d_yekskursiya_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f37.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F37 3556 bytes
font_01_sfnt_off00024cba.bin
5d517e20b2fdb2c6910f45e236134e4b7eea039161f02cace23a36f862237d4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CBA 14268 bytes
font_02_sfnt_off00027987.bin
7a627aa4f44f533dfe187fce68c313eebe19211c297d1fe0bd03851618cfccf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27987 14640 bytes
font_03_sfnt_off0002a4bd.bin
766739f434f127a0e5f50016eb8d5f40712aaea60584736a4893deb6300261ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4BD 6520 bytes
font_04_sfnt_off0002b75e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B75E 6084 bytes
font_05_sfnt_off0002c6f3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6F3 3752 bytes

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