Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd98014943c44aad…

MALICIOUS

PDF

186.8 KB Created: 2015-08-08 11:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b519aaf87443b52d9a5bba9d54653250 SHA-1: a740b6fcc3b27ce97c0fd6d85f8b257a2d92746d SHA-256: dd98014943c44aade4252af89667c151f9086702f60d7ee49d77f949e486ebdc
150 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. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. No scripts were extracted, but the presence of a malicious link suggests the PDF is intended to lure the user to a compromised site.

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-7527891-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7527891-0
  • 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=%D1%81%D0%B5%D1%80%D0%B3%D0%B5%D0%B9+%D0%BC%D0%B0%D1%81%D0%BB%D0%B5%D0%BD%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2+%D0%B6%D0%B8%D0%B7%D0%BD%D1%8C+%D0%BF%D0%BE+%D0%B5%D0%B2%D0%B0%D0%BD%D0%B3%D0%B5%D0%BB%D0%B8%D1%8E&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387062_yavnuyy_primer_shizofrenii.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386458_skachat_besplatno_igruy_na_nokia_asha_200.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384757_yeffektuy_teksta_v_sony_vegas.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002462a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2462A 3556 bytes
font_01_sfnt_off000253ad.bin
351f7784007b10266965d39b717dc91c649b8a5b16181c94ed52096dc976255f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253AD 15208 bytes
font_02_sfnt_off000282b5.bin
633b6ea7284c43c571bd38ec0ac46f2609dfb164849cd75d59a98da8d08cc52a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282B5 14468 bytes
font_03_sfnt_off0002ad62.bin
e068652de4d77ada9a8dd7bb1adfd4259b4c66600bef2e172abb1b719521a02e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD62 7012 bytes
font_04_sfnt_off0002c18d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C18D 6084 bytes
font_05_sfnt_off0002d122.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D122 3752 bytes

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