Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b70400ad452bc4…

MALICIOUS

PDF

183.0 KB Created: 2015-08-08 12:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 093566511796baa95a24b01f82da7cd1 SHA-1: ea75c235a50fcbf73efce5eee0e0dd526ca2b67a SHA-256: b9b70400ad452bc48d07e12ef7f75ed4e54adae384bf5fd3846eaa1c9cfbcb9f
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'http://botcraftman.ru/?lip&keyword=fvhost+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8' is the primary indicator of malicious intent, likely serving as a lure for phishing or malware download. No scripts were extracted from this sample.

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=fvhost+%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://img1.liveinternet.ru/images/attach/c/6//4387/4387914_raspisanie_avtobusa_111_108_arhangelsk.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389369_skachat_gta_san_andreas_troynoy_forsazh_tokiyskiy_drift_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384665_super_bonus_224215_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a0a6.bin
368120e7ef3644bdc394926a223ea4b4f22a0fc07274184352a2f680b601b9f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A0A6 6184 bytes
font_00_sfnt_off00023a22.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A22 3556 bytes
font_01_sfnt_off000247a5.bin
5390f20b91914f60e9b1bef3ab80e8b5772c410d05d8ed849c644663d9d0a189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247A5 14496 bytes
font_02_sfnt_off0002750d.bin
0be4ec08009afedaade5fb04b1d1452b62cd78497ec0c91429e431dce22a8a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2750D 14780 bytes
font_04_sfnt_off0002b219.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B219 6084 bytes
font_05_sfnt_off0002c1ae.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AE 3752 bytes

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