Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8050d33ed1f8432…

MALICIOUS

PDF

182.7 KB Created: 2015-08-08 09:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0f658187bf03d75a6491738660945d19 SHA-1: 19923514ee20a890b82f656ae5769091567351ac SHA-256: c8050d33ed1f843225a7efcee68ae1cf9fda25812c5301f240ec2039d3d42e83
90 Risk Score

Malware Insights

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

The PDF file was flagged by a malicious redirector heuristic, indicating it contains a link to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, but the presence of a malicious link suggests the document's purpose is to lure the user to a harmful site.

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=arash+feat+helena+one+day+%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383859_programma_dlya_zapisi_ryepa.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384084_goluye_pyanuye_devushki_foto.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383742_skachat_splashtop_gamepad_thd_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029d81.bin
a21c8436fa2c337a5f6f8b67fb5dce958474f4ea3e815604c3758d2b0f1d356f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29D81 6804 bytes
font_00_sfnt_off000237e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x237E3 3556 bytes
font_01_sfnt_off00024566.bin
060d1247ed55708b2c8e360fe913f6137203e263559376e843da868290175d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24566 14488 bytes
font_02_sfnt_off000271fa.bin
dc542786f2d4fe7acc7540bf10d48554bfa5ff7d5557caa58c6bccf36738d821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x271FA 14776 bytes
font_04_sfnt_off0002b129.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B129 6084 bytes
font_05_sfnt_off0002c0be.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0BE 3752 bytes

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