Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a0844da5990872…

MALICIOUS

PDF

184.2 KB Created: 2015-08-08 09:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9f219a7c3cecc96f3a827ec1ed0503c8 SHA-1: 05164c469112b0b6255590549509755fe859c3aa SHA-256: 37a0844da59908720acf64a651f68898ac4f5b36f541762309528c7d723901a0
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 compromise, suggesting the document's purpose is to redirect users to a harmful site. 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=%D0%B4%D0%B5%D0%BB%D1%8C%D1%84%D0%B8%D0%BD+%D0%B3%D0%BE%D0%BB%D1%83%D0%B1%D0%BE%D0%B9+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384559_sonic_adventure_2_hd_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384417_swat_4_gold_edition_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383714_skachat_klip_kiesza_hideaway_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dde.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DDE 3556 bytes
font_01_sfnt_off00024b61.bin
418ecefa7606c3fa889d7fbae2b18f12eb92926096d6a68022d8b3a2a50fad5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B61 14624 bytes
font_02_sfnt_off000278af.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278AF 14468 bytes
font_03_sfnt_off0002a35e.bin
410c707f1acd40b4cb9ae782efe574ec2da97b1013a3c37ae603b652318692a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A35E 6848 bytes
font_04_sfnt_off0002b713.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B713 6084 bytes
font_05_sfnt_off0002c6a8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6A8 3752 bytes

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