Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80d9302d7009b3d…

MALICIOUS

PDF

185.7 KB Created: 2015-08-08 11:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b1d5a2a4f6e1c1ac23299882162efb2b SHA-1: 0b111ad6a3bb29f5b7da73a2edc016c6bcfe8c4c SHA-256: a80d9302d7009b3db9535e4e8373ff3084c492dabb57acfc9c8b470f395278a6
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 points to 'botcraftman.ru', which is associated with malicious redirectors. No scripts were extracted, but the presence of a malicious link is sufficient to indicate a likely phishing or redirection attack pattern.

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=nfs+underground+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+repack+rus&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388722_1s_upravlenie_torgovley_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384038_kalendarnuyy_plan_kruzhok_po_legkoy_atletike_2013.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385573_russkie_pop_hituy_2015_slushat_i_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a6a2.bin
59e9fa3a0d91a2104dddef17b2c0c6cf5acd5ee6bd47ac620abe86df0791e991		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A6A2 7572 bytes
font_00_sfnt_off00023f2e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F2E 3556 bytes
font_01_sfnt_off00024cb1.bin
3a5a074a32ce544271803e8787f3734bf9bf0521349ec08e293837d6003323af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB1 15100 bytes
font_02_sfnt_off00027b6d.bin
3913bab1f02e360e93ffc3d96cce04770c63a4a0ae2f1c17803f343f656eb303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B6D 14620 bytes
font_04_sfnt_off0002bcd7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCD7 6084 bytes
font_05_sfnt_off0002cc6c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC6C 3752 bytes

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