Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f5dee17b3a3ee7…

MALICIOUS

PDF

186.7 KB Created: 2015-07-23 21:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 20ea4a3d87c155baf1e757fcc96adebb SHA-1: 31d1620fd18654e76360a2358e1efaa7d160c977 SHA-256: c3f5dee17b3a3ee7cc73316828ce6727c6e0708f97c11986c3f2231ef2d0ca1e
152 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 classifier score. ClamAV also identified it as Pdf.Dropper.Agent-8746425-0. The embedded URL http://botcraftman.ru/... is confirmed as a malicious redirector. No scripts were extracted, but the presence of a malicious link suggests the document's purpose is to lure the user to a harmful 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-8746425-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8746425-0
  • 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%9E%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA%D0%B0+1+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+%D0%BE%D0%B3%D1%8D+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183199_lavrovopesochnya_kaluga_shema_proezda.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184380_igra_moya_strana_2020_dlya_kompyutera_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024463.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24463 3556 bytes
font_01_sfnt_off000251e6.bin
90b0f07101f8cdd2fa2b0f9127f86466760bd1e0a10a7be393d610d87d028635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251E6 14568 bytes
font_02_sfnt_off00027fbc.bin
42bd5a069e10b342ed84d57256d9ffb4fef9f8b023f28f5461570ca4dd66298a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FBC 14808 bytes
font_03_sfnt_off0002ab80.bin
9a7d174c4291708f781e0c50c32fb0f18f37ce1fa7e9426a4fd60b4fa4ac7a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB80 7304 bytes
font_04_sfnt_off0002c0fb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0FB 6084 bytes
font_05_sfnt_off0002d090.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D090 3752 bytes

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