Malicious PDF — malware analysis report

Static analysis result for SHA-256 526e1e71a2e9233c…

MALICIOUS

PDF

185.0 KB Created: 2015-07-24 04:12:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bdcf39b28c878bc244841d0eb14c2f4a SHA-1: d135c9d7702dd9751e424359d4bdab2821d4b0df SHA-256: 526e1e71a2e9233c4d8b70d483aeea2bd354f9fe07305509a6f09f28098fbfb6
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, botcraftman.ru. This heuristic indicates the document's primary purpose is to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

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=gta+4+ps3+%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//4185/4185458_skachat_iso_obraz_windows_8.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188129_skachat_igru_vuyrasti_mema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187995_adob_audishn_15_skachat_besplatno_russkaya_versiya_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a6a0.bin
61f235f17ad7e80471145cb491daa304cece6571bf0e00c675b6deff578c72c5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A6A0 6816 bytes
font_00_sfnt_off00023f2a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F2A 3556 bytes
font_01_sfnt_off00024cad.bin
1ce563b9719acad47f731f4e2a742e5c1d13a77d229cbfe71ddb7b145556e49b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CAD 14976 bytes
font_02_sfnt_off00027b18.bin
295ce4a6a7ecfef2756afea08cf2fc13b764c080ed807379e924f60658622358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B18 14728 bytes
font_04_sfnt_off0002ba3c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA3C 6084 bytes
font_05_sfnt_off0002c9d1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9D1 3752 bytes

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