Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af76210f494a941…

MALICIOUS

PDF

185.0 KB Created: 2015-08-08 11:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bc5388163bea487ec49cc16e75a61f82 SHA-1: cd56272a0eddfe3f3631d9a1c4baa2c25d23c5ae SHA-256: 4af76210f494a941580ae1b1f27d8c28adae809a5adac5288738b8c27c051b42
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also flagged the document with high confidence. The primary IOC is the malicious URL http://botcraftman.ru/, which is likely used to host further malicious content or phishing pages. 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=%D0%B8%D0%B3%D1%80%D1%8B+%D0%BE%D1%82+%D0%BD%D0%B5%D0%B2%D0%BE%D1%81%D0%BE%D1%84%D1%82+%D0%B1%D0%B5%D0%B7+%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385940_krossvord_po_teme_literaturnuye_skazki_4_klass.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388137_simpsonuy_springfild_igra_na_kompyuter_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383849_zvezdnuye_volki_3_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fff.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FFF 3556 bytes
font_01_sfnt_off00024d82.bin
0fb51951520e63dfb73620e983722a0c247ba69e8df4294eed5ec077235a8acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D82 14720 bytes
font_02_sfnt_off00027b9a.bin
4a69e0cf3106f4760404dd56626cdbaa9a0081031a28aea1f7844b87e8e8795b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B9A 14468 bytes
font_03_sfnt_off0002a64c.bin
ad008ad380b9b4a0aafc4f9a97983699b34b724fdb2c7a15602e809154007e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A64C 6864 bytes
font_04_sfnt_off0002ba0d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA0D 6084 bytes
font_05_sfnt_off0002c9a2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9A2 3752 bytes

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