Malicious PDF — malware analysis report

Static analysis result for SHA-256 d43095ca4a1b1d0b…

MALICIOUS

PDF

184.2 KB Created: 2015-08-08 10:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e6f01eb10ed2912725ffbff93e710b06 SHA-1: 9726c96525800289fdbe1d498235bc58d88d6881 SHA-256: d43095ca4a1b1d0b21b48d1c623391df9a922f7b63beabb40935af08c8b0728d
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is identified as a known malicious redirector, indicating the document's primary purpose is to lure users to a potentially harmful site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8843990-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8843990-0
  • 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%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BA+%D1%84%D0%BE%D1%80%D0%BC%D0%B5+%D0%B5%D0%BD%D0%B2%D0%B4-1+%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://img0.liveinternet.ru/images/attach/c/6//4386/4386025_skachat_igru_virtus_antiterror.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385028_programma_tnt_na_sleduyuschuyu_nedelyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386009_skachat_video_240h320_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dff.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DFF 3556 bytes
font_01_sfnt_off00024b82.bin
c6832d7eaecf81981b165113751d4cc9465c5e25b8400a2338c3539794fa5170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B82 14240 bytes
font_02_sfnt_off0002782a.bin
3401787c702a0d5905e49c3744783c2b8f2f9e378d64f0097f55b2e2d4140f9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2782A 14468 bytes
font_03_sfnt_off0002a2d9.bin
784007b5d625d50403c697904d6acd73ac8ae7e57fd4b7b5b4bd35a8915b7e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2D9 6972 bytes
font_04_sfnt_off0002b717.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B717 6084 bytes
font_05_sfnt_off0002c6ac.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6AC 3752 bytes

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