Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff64f2757f709a8b…

MALICIOUS

PDF

184.9 KB Created: 2015-07-23 20:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9efb4d77745bc9c0b47548c6cbd050c8 SHA-1: 53643089e79b89d1b266eb3d51f6ed0e37cc230e SHA-256: ff64f2757f709a8bf60cae98faab0de415da4236c3ea531ee520c5b98771494e
98 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link and the ML classification strongly suggest a phishing or social engineering attack.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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%BC%D0%BE%D0%B9+%D0%B1%D0%B5%D0%B7%D1%83%D0%BC%D0%BD%D1%8B%D0%B9+%D0%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+3+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183245_derevyannuyy_dom_proekt.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184467_snyat_kvartiru_na_dlitelnuyy_srok_v_breste.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184411_metod_freyda_2_sezon_skachat_torrent_vse_serii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240b9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240B9 3556 bytes
font_01_sfnt_off00024e3c.bin
9580ccd3619d0384dd570a4aeb3d74c481f9b64b75950218eb94ccca91678aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E3C 14484 bytes
font_02_sfnt_off00027bf5.bin
a8e34466c77775282ff35936152e77d2d006e6251a28fa13b9eb6049a2645024		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BF5 14468 bytes
font_03_sfnt_off0002a6a0.bin
601c20d132e0ae0fb1f317c9de621234c8ebe1305d4e54643e28abc4f69bacef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6A0 6724 bytes
font_04_sfnt_off0002b9d9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D9 6084 bytes
font_05_sfnt_off0002c96e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C96E 3752 bytes

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