Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4df60c43947f6b…

MALICIOUS

PDF

186.0 KB Created: 2015-07-23 21:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c9d2fe2ae412c99b6e3fc945ecab3f3c SHA-1: 8a363b3b12758b42a2e2b293d159687ae12cdffb SHA-256: 8e4df60c43947f6baecf74435e13622145e70fe96b133fd7961c0a147f699d42
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site. No scripts were extracted, and the document body was truncated and uninformative.

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+%D0%BD%D0%BE%D0%B2%D1%8B%D0%B9+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%B3%D1%83%D1%84%D0%B0+2015+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184465_testovuye_zadaniya_po_russkomu_yazuyku_4_klass.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184358_zuppacraft_125_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024100.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24100 3556 bytes
font_01_sfnt_off00024e83.bin
d03fa689df843ce1518788117113414e673eb6730234f94cf1c97f5c95c554e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E83 14932 bytes
font_02_sfnt_off00027d13.bin
20022a3da58261568a1d07c35df999c175b04708c1971dcb570f4eed8bc8d7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D13 14640 bytes
font_03_sfnt_off0002a849.bin
3428a5c65bcd6a300b1292e54e63da9f6cf2e43c49487a41b2da3d3b527e0610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A849 7472 bytes
font_04_sfnt_off0002be5b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE5B 6084 bytes
font_05_sfnt_off0002cdf0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDF0 3752 bytes

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