Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2787d5e5afbe051…

MALICIOUS

PDF

186.6 KB Created: 2015-07-30 11:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0d48065bbc62d2356e68024b95eafc0b SHA-1: 50828ebdf95ff91cd0a873c3d865021f7cc22c42 SHA-256: f2787d5e5afbe051adec9b5e77e31e881126aca154a4aed480f9afb45f2e7039
90 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is classified as malicious. No scripts were extracted, and the document body was truncated, but the presence of the malicious link is sufficient evidence for this assessment.

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=%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%B0+338+%D0%B1%D0%B0%D0%BB%D0%B0%D1%88%D0%B8%D1%85%D0%B0+%D0%B6%D0%B5%D0%BB%D0%B5%D0%B7%D0%BD%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B6%D0%BD%D1%8B%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4229/4229285_fiksiki_skachat_torrent_5_sezon.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4228/4228136_pozhenit_byerri_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4249/4249712_skachat_sohranenie_dlya_gta_gta_san_andreas.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002443f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2443F 3556 bytes
font_01_sfnt_off000251c2.bin
c727354ef61fc24935f3291bc5ce1db68482246a7b704a493af649ef8c8a16fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251C2 14840 bytes
font_02_sfnt_off00027fa8.bin
b59d23bda5cbaf2e8c99f43d9d6083df43e08d5713f9530c58598396a4ce7758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FA8 14588 bytes
font_03_sfnt_off0002aab1.bin
efe1203b914cf13d9a161e9529140674eb7a1ea44d6810049c77591948a2ec09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAB1 7428 bytes
font_04_sfnt_off0002c070.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C070 6084 bytes
font_05_sfnt_off0002d005.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D005 3752 bytes

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