Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5956b4ed5ded19…

MALICIOUS

PDF

183.0 KB Created: 2015-07-23 20:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 946d55c9673a611855c2d20f4b6da8af SHA-1: a074ac257b2aa26505999546b78ae4df88d11f6b SHA-256: 3c5956b4ed5ded19782f646c1ca72a72994414105e08c69aaab36dbbf96bf4f9
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=%D0%90%D0%B8%D0%BC+%D0%BD%D0%B0+contract+wars&charset=utf-8' is the primary indicator of this malicious redirection. ClamAV also detected this file as 'Pdf.Dropper.Agent-8786691-0', suggesting it acts as a dropper for other malicious payloads. No scripts were extracted, limiting the analysis of the specific payload delivery mechanism.

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-8786691-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786691-0
  • 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=%D0%90%D0%B8%D0%BC+%D0%BD%D0%B0+contract+wars&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184469_lalalupsi_multik_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183199_lavrovopesochnya_kaluga_shema_proezda.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a084.bin
2016d3073bf9b19d7cef10aa90c6dad07cd07b9e3db17b58f1e1e7d096222be6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A084 6316 bytes
font_00_sfnt_off00023a54.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A54 3556 bytes
font_01_sfnt_off000247d7.bin
137b9a6b2d6dfe3f4017013e58a1b4b3e35b174fa24d7db3415e641d56d2f04f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247D7 14564 bytes
font_02_sfnt_off0002753c.bin
57c61f7a3fdbdcfc1a33236c60d5069e4597aa535b8e76e426adf5262c7750d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2753C 14652 bytes
font_04_sfnt_off0002b259.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B259 6084 bytes
font_05_sfnt_off0002c1ee.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1EE 3752 bytes

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