Malicious PDF — malware analysis report

Static analysis result for SHA-256 d53abd29798e7746…

MALICIOUS

PDF

185.1 KB Created: 2015-08-05 13:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: de69f36ab7a842b05767151b797fc0cc SHA-1: 07f27bc6172a8fbd572efe34430e545d87398b50 SHA-256: d53abd29798e77465d26bfe7691c15f54c590e65b836007d38f882dc422b5ab5
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful site.

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=microsoft+office+2003+professional+sp3+russian+%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//4304/4304553_doklad_na_temu_istoriya_izobreteniya_turbin.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304518_knigi_na_android_v_formate_apk.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304557_yelektronnuyy_didzhey_dance_8_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5f6.bin
8ccfb2d91445601573981ee0e6b3c4cd8c284274d05e4291c56e2b16136020d4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5F6 7108 bytes
font_00_sfnt_off00023f32.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F32 3556 bytes
font_01_sfnt_off00024cb5.bin
9f62fad089ec356f98757f13ca0c1ae9e0ec81b60552d408a74d4bf04053481b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB5 14720 bytes
font_02_sfnt_off00027a9d.bin
ffe5d9612ddc9a6f7f6b3afd321e105b987f0a978cd1b5b22ad402238df1488f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A9D 14676 bytes
font_04_sfnt_off0002ba9b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA9B 6084 bytes
font_05_sfnt_off0002ca30.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA30 3752 bytes

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