Malicious PDF — malware analysis report

Static analysis result for SHA-256 500f285409e70160…

MALICIOUS

PDF

186.0 KB Created: 2015-07-23 20:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d600acf3ee31f75ad0cfee1120f92fe9 SHA-1: e6b9995577a3ef47e7c8a5fdfe4669c8985f1b32 SHA-256: 500f285409e701608b7e567d6646b353304855ae9d522ab5909c41ffc3cb8705
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to botcraftman.ru, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with a high score. ClamAV detected it as Pdf.Dropper.Agent-8787012-0, suggesting it acts as a dropper for further malicious activity. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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-8787012-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787012-0
  • 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=scorpions+%D0%BB%D1%83%D1%87%D1%88%D0%B8%D0%B5+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8+%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://img1.liveinternet.ru/images/attach/c/5//4183/4183257_urok_proekt_po_russkomu_yazuyku.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183180_lebedi_shema_vuyshivki_krestom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184324_happy_wheels_igrat_onlayn_besplatno_v_polnuyu_versiyu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a9a6.bin
ba33a394ce9e16172baf43aa725ae0f2983e6d9b522bd92c647118922e63ef73		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A9A6 7136 bytes
font_00_sfnt_off0002426d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2426D 3556 bytes
font_01_sfnt_off00024ff0.bin
7724bb55613eaf67310c49d4dd10a0e4f141d5f9da5fc391e79cbb1237853848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FF0 15056 bytes
font_02_sfnt_off00027e2d.bin
caa185078d4e5c4b101120d802cba1682b884255fd82baacf08572b5b8f0eb7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E2D 14736 bytes
font_04_sfnt_off0002be4d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE4D 6084 bytes
font_05_sfnt_off0002cde2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDE2 3752 bytes

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