Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d29025b2dd83da1…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 12:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 311a30b89a7abad5101d21f94e9b94ee SHA-1: d5a5c03e4d4775bf8e355b785f3eed50ef7afe7c SHA-256: 9d29025b2dd83da1f1eb76e07ee978e4f4553ba21e4cc24af367f7987eeef2ec
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 assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted from this sample.

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=unigine+heaven+benchmark+40+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187884_skachat_igru_ufc_2013_na_kompyuter_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184589_android_system_recovery_3e_instrukciya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185677_skachat_knigu_mein_kampf_na_russkom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e4c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E4C 3556 bytes
font_01_sfnt_off00024bcf.bin
22d9a878b24a22abf1fabea6207334ca6c5511c3457134007ab0de213c91d5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BCF 14832 bytes
font_02_sfnt_off0002798d.bin
cdae690c6f310140b78107b462fd7751c6b6f53c4bb0ab1e3b4bc398dc98bf19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2798D 14996 bytes
font_03_sfnt_off0002a5b3.bin
c3c86fe93d0e0010c0a444c792ae95eb8b3f6a12d332b5d93b07a992077f8854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5B3 7524 bytes
font_04_sfnt_off0002bbbc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBBC 6084 bytes
font_05_sfnt_off0002cb51.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB51 3752 bytes

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