Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff6c20e33a6bfe3…

MALICIOUS

PDF

187.6 KB Created: 2015-08-05 15:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0a985bc3c1b6968aa8d9388fc6075ac7 SHA-1: 921ba6ae45b04fcc9fc2efdb40cc2376a12a698c SHA-256: cff6c20e33a6bfe34ce9a6126e61d371ffc3b2c786a8765864897ded06a11e6b
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 and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-8789719-0. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. This suggests the PDF is designed to lure users to a malicious site, likely for further exploitation or malware delivery.

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-8789719-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789719-0
  • 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%BF%D0%BE%D0%BB%D0%BD%D1%8B%D0%B9+%D0%BF%D1%80%D0%B8%D0%B2%D0%BE%D0%B4+2+hummer+extreme+edition+%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/6//4304/4304787_navuyki_dlya_rezyume.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305458_kratkie_prilagatelnuye_primeruy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4293/4293725_skachat_kartu_rudnogo_s_nomerami_domov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024706.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24706 3556 bytes
font_01_sfnt_off00025489.bin
1f293910d013d1ae1faadc8ea055d00af682ee5d062c192b5d491a08a354352e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25489 14460 bytes
font_02_sfnt_off000281e8.bin
e472951d1d2ad361e8ebd6e406c25458fdefde741046e3514005d666edb6fe5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281E8 14912 bytes
font_03_sfnt_off0002adc8.bin
291b6da98d88b57f1df7af857fd91d3ec5459b72ef0b721c7a9d59fad7ef582b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADC8 7740 bytes
font_04_sfnt_off0002c494.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C494 6084 bytes
font_05_sfnt_off0002d429.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D429 3752 bytes

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