Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6bdf8140c54845…

MALICIOUS

PDF

183.5 KB Created: 2015-07-23 20:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2b11cd415f39c6b51c4b85c4da3e1d86 SHA-1: d5cee89fc7b137087c92c259e3e1619028f92485 SHA-256: cc6bdf8140c54845a1998f30a4bd49e0041f4416a60ba351a260ed7ed5c34801
92 Risk Score

Malware Insights

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

The PDF file contains an embedded link flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack. No scripts were extracted, limiting the analysis of the exact payload.

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%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+181+%D1%81+%D0%BC%D0%BE%D0%B4%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184558_skachat_fl_studio_11_na_russkom_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184480_kasting_vudmana_v_rossii_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184333_krossvord_po_fizike_na_temu_magnitnoe_pole_s_otvetami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023cc1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23CC1 3556 bytes
font_01_sfnt_off00024a44.bin
c6d55da2ae348fba104f492972970cc9fb8456b79ccf303d1a3e31735f4938ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A44 13836 bytes
font_02_sfnt_off0002760f.bin
d5d8a66c54d88b1fd3e9751d1946ec7768e13949c664bd33b207189c6d131484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2760F 14468 bytes
font_03_sfnt_off0002a0c2.bin
280c5889f835a52a7e883be6712b2e9cb67c0b5c779f91471553d7968221f862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A0C2 6776 bytes
font_04_sfnt_off0002b44c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B44C 6084 bytes
font_05_sfnt_off0002c3e1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3E1 3752 bytes

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