Malicious PDF — malware analysis report

Static analysis result for SHA-256 52feabf2b7737955…

MALICIOUS

PDF

184.4 KB Created: 2015-07-24 12:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 24e5c1122aa9777fb675a78c517324d5 SHA-1: 7761c2e0334daef9462467dc08c17675cf3b1363 SHA-256: 52feabf2b7737955e7093a0ea3404ba8455aef4a44526e8c86aa9441421ac893
92 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 infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to deliver a second-stage payload or redirect the user to a phishing site. 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%BF%D0%BE%D0%B4%D0%B0%D1%80%D0%BE%D0%BA+%D1%81+%D1%85%D0%B0%D1%80%D0%B0%D0%BA%D1%82%D0%B5%D1%80%D0%BE%D0%BC+%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://img1.liveinternet.ru/images/attach/c/5//4191/4191783_deklaraciya_3_ndfl_2013_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189401_talon_na_moped_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191602_chertezhi_modeley_parusnuyh_korabley_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024048.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24048 3556 bytes
font_01_sfnt_off00024dcb.bin
1140c3e9dc4ad25c348a3d11248c2bb493469559a06d6c680e2359807dc454bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DCB 14388 bytes
font_02_sfnt_off00027afa.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AFA 14532 bytes
font_03_sfnt_off0002a5e7.bin
797bee0ac9b077ba5d442da1bc2af480dd825d1bf9fe4a7109a25c0f2596172f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5E7 6300 bytes
font_04_sfnt_off0002b7c0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7C0 6084 bytes
font_05_sfnt_off0002c755.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C755 3752 bytes

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