Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f27304ebbc8003…

MALICIOUS

PDF

182.9 KB Created: 2015-08-08 09:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 57cc45e27e54f3e2292779f4f4287cda SHA-1: 0093ba5428fbaaff0f8eca967d699a4714b9e108 SHA-256: 17f27304ebbc8003ff6394bf10be3319791b84843d57380510bfee134407b93e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector.

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=stickman+warriors&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384086_prikaz_624_sro_poslednyaya_redakciya_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384065_dzhastin_timberleyk_novuyy_albom_2013_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383900_mortal_kombat_mugen_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029fef.bin
abc286ad9d912d15e1c2851b02a6acbc0c958ca8f19403bfb9692b9d24f88263		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29FEF 6316 bytes
font_00_sfnt_off000237e0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x237E0 3556 bytes
font_01_sfnt_off00024563.bin
15a1e64b9c816d204e1dfa4e5bf032706d2679eb38163aac99825b078a002164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24563 14904 bytes
font_02_sfnt_off00027385.bin
ab2748cbbb1008f021d87b43b4b9806611e2c82d07da3ab0afa8e26e61a96c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27385 15032 bytes
font_04_sfnt_off0002b1b1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1B1 6084 bytes
font_05_sfnt_off0002c146.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C146 3752 bytes

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