Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb94d28e6451d3a…

MALICIOUS

PDF

187.0 KB Created: 2015-07-26 12:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 17a8700383765bfb65e140ba3507b1b4 SHA-1: 64c34cfe69e37a45290f4f9abb6b479ded4971b8 SHA-256: cbb94d28e6451d3acdd800c8b217e179afde331283ad3526e0f08c917e1e62e6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

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 http://botcraftman.ru/... is the primary indicator of compromise, suggesting the document's purpose is to redirect users to a malicious site. No scripts were extracted, and the document body was not sufficiently readable to infer further intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B5%D0%B1+%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D1%8B+%D0%BD%D0%BE%D1%83%D1%82%D0%B1%D1%83%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199466_skachat_besplatno_cherez_torrent_igruy_na_pk_dlya_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204783_kredo_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200759_skachat_windows_7_domashnyaya_rasshirennaya_32_bit_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024825.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24825 3556 bytes
font_01_sfnt_off000255a8.bin
0864791a48cf9ea06892674f86d05dfad9eba05084b4e7b620cc29b3efc955dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255A8 14464 bytes
font_02_sfnt_off0002832d.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2832D 14468 bytes
font_03_sfnt_off0002addf.bin
aad779a6172d78ddb5cebecb6c0534edd3d91ba34c6833634b3bd51b608b5322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADDF 7044 bytes
font_04_sfnt_off0002c258.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C258 6084 bytes
font_05_sfnt_off0002d1ed.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1ED 3752 bytes

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