Malicious PDF — malware analysis report

Static analysis result for SHA-256 cefe4dfcadc52e2e…

MALICIOUS

PDF

184.7 KB Created: 2015-08-08 16:35:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d927531a05136a5c7eaf31267e928f06 SHA-1: 2b9158812742576bd4dd7c6694c54577c446d3fd SHA-256: cefe4dfcadc52e2e4da35993f993ad4272140d762f703ebee3ca2086e94b18b3
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%B2%D0%BE%D0%BB%D1%87%D0%BE%D0%BD%D0%BE%D0%BA+1+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4397/4397990_skachat_pesnyu_yarmakserdce_pacana.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390900_programmuy_dlya_nokiya_5530_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4398/4398695_skachat_igruy_dlya_nokia_s_5_03_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ff7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FF7 3556 bytes
font_01_sfnt_off00024d7a.bin
5467824ab833c6cd9ef14b0aa7048fe101dfac1393819eecaf0334d4df7f5d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D7A 14460 bytes
font_02_sfnt_off00027ad7.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AD7 14468 bytes
font_03_sfnt_off0002a589.bin
7e92b7cf3639d293d1dd4b7a6276cb34d20f24aa7a81878c30fd1e297b0cd3d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A589 6760 bytes
font_04_sfnt_off0002b91c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B91C 6084 bytes
font_05_sfnt_off0002c8b1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8B1 3752 bytes

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