Malicious PDF — malware analysis report

Static analysis result for SHA-256 50931eddbfbab2db…

MALICIOUS

PDF

186.9 KB Created: 2015-08-05 18:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 34c6fc4b27eec9328d8673f1dd36f636 SHA-1: 07eb0500d059e10fcc038d4d0526bbc181003923 SHA-256: 50931eddbfbab2db3aec953d01ade0a4ced067df9ea3571ba821693771a8763b
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely intended to lure the user into downloading malicious content or visiting a phishing site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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=windows+xp+sp3+2013+%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+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%81+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305411_skachat_drayver_pak_solyushen_2014_besplatno_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305458_kratkie_prilagatelnuye_primeruy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4307/4307097_shporuy_po_russkomu_yazuyku_egye_2015_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa28.bin
02f29e3bc5284ed4dd89fc576f18b3e13a10f597f802cc808e7dfd9bc6f05865		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA28 7952 bytes
font_00_sfnt_off0002450d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2450D 3556 bytes
font_01_sfnt_off00025290.bin
cdbb74d72bd4806f77023d303a6f6a624deaf7571513620b767ac0987f0a9e89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25290 14160 bytes
font_02_sfnt_off00027eff.bin
7f5ffbbecc153956415b118d30d7c17a0a05b7e760da8b75ee2c24c8f4e754a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EFF 14604 bytes
font_04_sfnt_off0002c1b9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1B9 6084 bytes
font_05_sfnt_off0002d14e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D14E 3752 bytes

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