Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82bcdb4741aa8d6…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 00:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0d2b09f406790cddf17070c3bbf04d74 SHA-1: 1287f76e15dc52cbba05b2b583fe24434981ac0a SHA-256: c82bcdb4741aa8d64bf5368e1be615c6854b21c1c44614111e8c4ea4f1cb48dd
90 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. 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=%D0%9D%D0%BE%D0%B2%D0%BE%D0%BA%D1%83%D0%B9%D0%B1%D1%8B%D1%88%D0%B5%D0%B2%D1%81%D0%BA+%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D1%82%D1%80%D0%BE%D0%BB%D0%BB%D0%B5%D0%B9%D0%B1%D1%83%D1%81%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • 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//4184/4184760_multimedia_fusion_2_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185224_raspiska_v_poluchenii_deneg_pod_zalog_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024280.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24280 3556 bytes
font_01_sfnt_off00025003.bin
82e7be13bfee8046e7a01d7d02def2da82258f7c7d84ad01490a3da5c8c1a984		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25003 14312 bytes
font_02_sfnt_off00027c9f.bin
a0637eda0aec6819b961ba30aa3975a9acb3d40b2f85ccacee0f3354be30d398		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C9F 14520 bytes
font_03_sfnt_off0002a770.bin
0848328b65b36830ee2532706ca16c8eaf431376be847594bc49038d1c313a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A770 6744 bytes
font_04_sfnt_off0002bab8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAB8 6084 bytes
font_05_sfnt_off0002ca4d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA4D 3752 bytes

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