Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6911f0d32b64978…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 12:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d485ea27eeb97f6559a724295604895f SHA-1: 7af651a256c877982bc6804dbb30460c3527e6ca SHA-256: f6911f0d32b6497849cf52f68f04bfc3984713151c64ca52c78a72cbf51308c9
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a critical finding for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The embedded URL is the primary indicator of compromise, suggesting the PDF's purpose is to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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-7495120-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7495120-0
  • 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%A0%D0%B5%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B5+%D0%B8%D0%B7%D0%BD%D0%B0%D1%81%D0%B8%D0%BB%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%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://img1.liveinternet.ru/images/attach/c/5//4189/4189507_videoadapter_matrox_g55_mdha32db_drayver.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184534_hspa_locker_13b_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184789_evaphone_na_russkom_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024374.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24374 3556 bytes
font_01_sfnt_off000250f7.bin
857dd394c5fcfc3e2a9186bd10930679c9c3d2d14d879f6bfe21680935e8b2ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250F7 15028 bytes
font_02_sfnt_off00027f41.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F41 14468 bytes
font_03_sfnt_off0002a9f3.bin
84095c59a20874b81d12fc7909d4fc460cfdcb2dfc324b5e253bee4dd144b573		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F3 6520 bytes
font_04_sfnt_off0002bc88.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC88 6084 bytes
font_05_sfnt_off0002cc1d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC1D 3752 bytes

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