Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4628e251a6314ce…

MALICIOUS

PDF

185.4 KB Created: 2015-07-25 06:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2fb4eed309bf63229879462acb0c2aa6 SHA-1: bc8ed5ba87108078702a5f1d016be4e74899f956 SHA-256: d4628e251a6314ceab799c1ef1480c01158303e823153096d00bc526d57163a5
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to lure users into downloading malicious content by masquerading as a software download. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=photoshop+cc+2015+mac+%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://img0.liveinternet.ru/images/attach/c/5//4200/4200441_skachat_igru_na_telefon_dogsim.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191516_ochen_smeshnoy_vuykup_nevestuy_scenariy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198454_skachat_igru_shrek_3_cherez_torrent_russkaya_versiya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a632.bin
f2c9e0b2cba8a639c1c43c9c86a43bea2a7d5530dde0e9889080c318e7a06710		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A632 7328 bytes
font_00_sfnt_off00023e58.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E58 3556 bytes
font_01_sfnt_off00024bdb.bin
b32d140d2c6d25e50e9bb212899debaf4c8130883c17fb539c6840a42d745703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BDB 15104 bytes
font_02_sfnt_off000279f4.bin
f7544b65adaf1fbd1e682e63b086c34acdebd73a4ae2e4819839f4e005d15af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279F4 15160 bytes
font_04_sfnt_off0002bba5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBA5 6084 bytes
font_05_sfnt_off0002cb3a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB3A 3752 bytes

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