Malicious PDF — malware analysis report

Static analysis result for SHA-256 2abb87306c4b257c…

MALICIOUS

PDF

188.3 KB Created: 2015-07-31 09:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e58431a0bbf41ad48378043ec5fdec9e SHA-1: 8662ead25f18a0047d784a2ce6bc10bd419df70b SHA-256: 2abb87306c4b257c243610660593b8d44369cf0bf740cc6efa15e03c6381eaa2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF 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 confirmed as a malicious redirector, suggesting the document's purpose is to lure 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=malwarebytes+anti-malware+%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+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+c+%D0%BA%D0%BB%D1%8E%D1%87%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4221/4221025_bolshie_polovuye_gubuy_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4256/4256871_obrazec_zapolneniya_formuy_13001_pri_vnesenii_izmeneniy_v_ustav.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4249/4249671_skachat_papku_system32_dlya_windows_7.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002b018.bin
f56151eb90d46464b92a172ee13118062dc11bac42292f3de9029baf14300bf2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B018 7908 bytes
font_00_sfnt_off000247b1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247B1 3556 bytes
font_01_sfnt_off00025534.bin
28f09f683bcb5f17defec749bc068504077feb7bcdc7ba10ca0b6d9792b77634		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25534 15228 bytes
font_02_sfnt_off000283f3.bin
7a8b7496aa5fe58e1979d17037010af796341710ffa11755d1e3832252941205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283F3 14948 bytes
font_04_sfnt_off0002c797.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C797 6084 bytes
font_05_sfnt_off0002d72c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D72C 3752 bytes

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