Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bd604f97dc3cbc…

MALICIOUS

PDF

193.0 KB Created: 2015-07-23 20:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9d1817cc105f6dcaa105148d8e1f93dc SHA-1: d85c107916ecd5dbbcdfeb50fe80c0135fb2b787 SHA-256: 39bd604f97dc3cbc7f4d2a7374f801d45028f05ac5847cfaff762119b17c2e39
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%83%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B8%D0%B7+%D0%B7%D0%B0%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%BD%D0%BE%D0%B9+%D0%BF%D0%BB%D0%B0%D1%82%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184316_usloviya_postavki_01187462_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184362_instrukciya_po_ohrane_truda_dlya_vracha_kdl.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184319_kryak_alavar_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026049.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26049 3556 bytes
font_01_sfnt_off00026dcc.bin
0937c5994d318971dad63f29211982aa78d5ec4e475236f56d8f5c1f9ade3f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26DCC 14324 bytes
font_02_sfnt_off00029ad9.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29AD9 14468 bytes
font_03_sfnt_off0002c588.bin
28e5a5a7227a03864de96663558d92f66a24f1545e84df0659c438101a69fc7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C588 7120 bytes
font_04_sfnt_off0002da33.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA33 6084 bytes
font_05_sfnt_off0002e9c8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9C8 3752 bytes

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