Malicious PDF — malware analysis report

Static analysis result for SHA-256 89868047a8f6f52e…

MALICIOUS

PDF

184.7 KB Created: 2015-08-08 11:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: af3f04f43d4b30acb23837c695d8713f SHA-1: 294ac3cceada8ccbac82316f3847ba92cbac1d48 SHA-256: 89868047a8f6f52efc6274735acbf5b7bbb47fd963f9823dc5fd4f097499dde4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. 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 distribution site. No scripts were extracted, and the document body was not parsable.

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=opportunities+elementary+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386742_kreml_2222_stalker_skachat_txt.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387261_temuy_na_rabochiy_stol_dlya_windows_7_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383989_skachat_programmu_artmoney_na_androyd.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2d2.bin
32142ec08a0878689c7462c2ad5b9b5ece0207476cf80ab7f3db3b124b62b955		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2D2 7548 bytes
font_00_sfnt_off00023bbb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BBB 3556 bytes
font_01_sfnt_off0002493e.bin
993366f52b8d5f0e4f6c504036f95f67fcf2a16a2ac06d72bbe5f8d9a6eb325e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2493E 14896 bytes
font_02_sfnt_off0002773b.bin
9c2ffbc65a31b4b8cd9c5e981fa2008ea447f932dcb31017b337f6ceafe6764b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2773B 14908 bytes
font_04_sfnt_off0002b912.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B912 6084 bytes
font_05_sfnt_off0002c8a7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8A7 3752 bytes

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