Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfcbdbe6dc376e3…

MALICIOUS

PDF

184.9 KB Created: 2015-08-05 13:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f319746f759cf76244e6c469726b4568 SHA-1: e4e117d0b7a86652e7d12879e74c9b22417ee31d SHA-256: 2bfcbdbe6dc376e3cfa30d40ecce7e0f9c234b4dd408ebd391ef6a9a5c2eb463
90 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirection. No scripts were extracted, but the presence of the malicious link is sufficient evidence of a phishing or redirection attack.

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%D1%85%D0%B5%D0%BC%D0%B0+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%85%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D0%BB%D0%B8%D1%84%D0%B0%D0%BD+%D0%B1%D1%80%D0%B8%D0%B7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304661_programma_dlya_zahvata_video_s_veb_kameruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304483_testmem_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304624_skayrim_koduy_na_mebel.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024091.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24091 3556 bytes
font_01_sfnt_off00024e14.bin
536c87d159c019cd1bc7a055af547be3a7bcceff727c8c7ce2f977872be06f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E14 14440 bytes
font_02_sfnt_off00027b75.bin
0627de34e839737c03af0d9f30945bab194dadec018a1d0b90d3566f99dbb150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B75 14532 bytes
font_03_sfnt_off0002a664.bin
8a870c098ac91fce146df6d053a8480b3a8eeb3aa7c08381f9985fbfc3349932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A664 6764 bytes
font_04_sfnt_off0002b9d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D1 6084 bytes
font_05_sfnt_off0002c966.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C966 3752 bytes

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