Malicious PDF — malware analysis report

Static analysis result for SHA-256 e951412b74532fca…

MALICIOUS

PDF

183.8 KB Created: 2015-08-08 10:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e7ab86eaed07de3d3fa548a3a8306909 SHA-1: 1ce77831e18ad3fa4e7cff0ed63618779743950b SHA-256: e951412b74532fca37ade556a99ec8dd10fb36b9a0509fcbfc45cbb4f889ad51
92 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, 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, and the document body was not sufficiently readable to infer further intent.

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=%D0%BA%D0%BE%D1%88%D0%BA%D0%B0%D1%80+%D0%BC%D0%B5%D0%BD+%D1%82%D0%B5%D0%BA%D0%B5+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386246_kontrolnuyy_zhurnal_flay_ledi_shablonuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384920_smeshnuye_scenarii_skazok_na_sovremennuyy_lad_dlya_vzrosluyh_i.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384537_biznes_v_stile_fank_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e99.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E99 3556 bytes
font_01_sfnt_off00024c1c.bin
c0515eb5d8ac0d7d50fd931eb28be6558c336f09575870bb88a615bfc34b4e94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C1C 14040 bytes
font_02_sfnt_off00027858.bin
9576353abb4e2cf3360eec5398b99ce0ef8d02a10cf5edb117997219c6dfa553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27858 14520 bytes
font_03_sfnt_off0002a32b.bin
72e3b69082ae45ef604f286c50bd87f14cbda18dd7783cf179ee5b19df2a47ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A32B 6456 bytes
font_04_sfnt_off0002b571.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B571 6084 bytes
font_05_sfnt_off0002c506.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C506 3752 bytes

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