Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7aedc1791ff146b…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 12:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b754cadfa04c8d15d06eba1e815fe87d SHA-1: 6a36abbab271ea58739b9a9c1d644c8aa06c0d48 SHA-256: f7aedc1791ff146b23662df7df7253c1b6cf73225379b099784f5b11a3bc16ae
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 assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirector activity. No scripts were extracted from this sample, but the presence of the malicious link strongly suggests a delivery mechanism for further malicious content.

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=tekken+6+%D0%BD%D0%B0+pc+%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+rus&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184469_lalalupsi_multik_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189507_videoadapter_matrox_g55_mdha32db_drayver.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190240_reshenie_demonstracionnogo_varianta_egye_po_fizike_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4bb.bin
792171242cfc06a898c742a3fd4a790fc313a33218af2c5e037466295ca4b4c2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4BB 6932 bytes
font_00_sfnt_off00023d4c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D4C 3556 bytes
font_01_sfnt_off00024acf.bin
931b00a3be0a1d5c3ddc787a15f993da9db13d284a557b7255d4030c23e1be6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24ACF 15340 bytes
font_02_sfnt_off00027a0c.bin
fe78afa6b244b59faed32f5717e54dcb72a2cae4c79d529c6d1522b806ff5856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A0C 14468 bytes
font_04_sfnt_off0002b8bb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8BB 6084 bytes
font_05_sfnt_off0002c850.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C850 3752 bytes

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