Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a39efced1ba1d6…

MALICIOUS

PDF

187.1 KB Created: 2015-07-24 04:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dad9edd9da9cbd57289ab964439ae2c7 SHA-1: 7a4c3a132ba659dd675b53ae3f45ce849b352504 SHA-256: 97a39efced1ba1d6d8d51041bede4a318dd5612b02cd4f4bdf4bfb795782e1ba
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, 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 truncated, limiting further analysis.

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%93%D0%B0%D0%B7+2217+%D1%81%D0%BE%D0%B1%D0%BE%D0%BB%D1%8C+%D0%B1%D0%B0%D1%80%D0%B3%D1%83%D0%B7%D0%B8%D0%BD+-+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D0%B8+%D0%BF%D0%BE+%D1%80%D0%B5%D0%BC%D0%BE%D0%BD%D1%82%D1%83&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184987_otzuyv_na_magisterskuyu_dissertaciyu_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186411_skachat_stalker_novaya_voyna_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183181_kuryatnik_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024856.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24856 3556 bytes
font_01_sfnt_off000255d9.bin
ce69bceb53195a32bc2246df22c85bead97764d8c27faa89cbfed96b8bf56403		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255D9 14528 bytes
font_02_sfnt_off0002833f.bin
d1e01db53396a621e1ad9dbc0c78cb4841617bac1252d6c406c9b3a521fccf66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2833F 14512 bytes
font_03_sfnt_off0002ae24.bin
5ef2df1a4e5e3a1a91a1497b9e1ec89f6d876a4ef113545ad9cf8500eaaeee5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE24 6984 bytes
font_04_sfnt_off0002c27d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C27D 6084 bytes
font_05_sfnt_off0002d212.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D212 3752 bytes

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