Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d3f1fa0ccaa703…

MALICIOUS

PDF

187.9 KB Created: 2015-07-24 00:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dfcb147fa3ae9e39bcea3a068a400977 SHA-1: 05a381673e58e3fb3aaffa5d848797e8e9ac6a7e SHA-256: 79d3f1fa0ccaa703ed4391cb9bc9bd71604a5172d5699b191e4aa5e40bc36976
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-7494289-0. The embedded URL points to a known malicious redirector, indicating the document's purpose is to lure users to a compromised site. No scripts were extracted from this sample.

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-7494289-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494289-0
  • 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%B7%D0%B0%D1%85%D0%B0%D1%80+%D0%BF%D1%80%D0%B8%D0%BB%D0%B5%D0%BF%D0%B8%D0%BD+%D0%BE%D0%B1%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+fb2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185559_geroi_3_vozrozhdenie_yerafii_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184317_potrm0162001_s_izmeneniyami_2015_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186413_skachat_hud_dlya_gta_san_andreas_s_avtomaticheskoy_ustanovkoy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248c7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248C7 3556 bytes
font_01_sfnt_off0002564a.bin
5d50b2e459a589bf8ca36658e507d4a45469164f36e698082d10bbbeaa5977e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2564A 15240 bytes
font_02_sfnt_off00028599.bin
4796e4de77e114d9908affb147c766b914cd1a6c9c095146928e0e8f2996d41e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28599 15020 bytes
font_03_sfnt_off0002b1fd.bin
227fc10bed1fba1b4476bde069b6e4c1943696103dfd6cec176d8008b29ac056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1FD 6888 bytes
font_04_sfnt_off0002c5f4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5F4 6084 bytes
font_05_sfnt_off0002d589.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D589 3752 bytes

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