Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a4a22649204b66…

MALICIOUS

PDF

184.4 KB Created: 2015-07-28 13:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e070b8dd2681e96768d834ff366e3767 SHA-1: 3098648efa5baef4b31e93ff4c4ad31b739ef12f SHA-256: 94a4a22649204b6625bafc77f9f6609d72a48bbdbd663f9c7952c695827df312
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 machine learning classifier. The embedded URL, http://botcraftman.ru/, is known to be associated with malicious redirector infrastructure. This suggests the document is designed to lure users to a compromised site, likely for further malware delivery or exploitation.

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-8788483-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8788483-0
  • 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%9A%D0%BE%D1%81%D1%8B%D0%BD%D0%BA%D0%B0+%D0%B4%D0%BB%D1%8F+windows+xp+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210187_skachat_igruy_na_android_maynkraft_095_s_modami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4214/4214408_europa_universalis_4_skachat_torrent_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198370_skachat_fotoshop_cs2_na_russkom_yazuyke_besplatno_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2f3.bin
c020b827defb4d79cf41659e7c0e665a3f3b2d77b6d5bf2ff7f718e43ab12b82		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2F3 7140 bytes
font_00_sfnt_off00023d17.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D17 3556 bytes
font_01_sfnt_off00024a9a.bin
3a14f3ff90b1df2291d8a7275c293d208f34ab7aaf66886f69fd596da9915034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A9A 14680 bytes
font_02_sfnt_off000277c6.bin
2c6286abbc246f7c96bab623401c240d8cf902bdc2e83b1055710d2945145c02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277C6 14604 bytes
font_04_sfnt_off0002b7ad.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7AD 6084 bytes
font_05_sfnt_off0002c742.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C742 3752 bytes

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