Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aada8b7080f3df2…

MALICIOUS

PDF

186.8 KB Created: 2015-07-25 19:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1caedc3813e11c2e3146fa25c401727d SHA-1: 3716a9ee30113b4ffc75a4b1195a6bbf219eca25 SHA-256: 3aada8b7080f3df25abd29c89c3564b745058d33a76ed41ff8bab330ded87033
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site. No scripts were extracted, and the document body was truncated, limiting further analysis.

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%B3%D1%82%D0%B0+%D1%81%D0%B0%D0%BD+%D0%B0%D0%BD%D0%B4%D1%80%D0%B5%D0%B0%D1%81+%D0%BA%D0%B0%D0%B2%D0%BA%D0%B0%D0%B7+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195422_tayna_moego_muzha_liana_moriarti_skachat_besplatno_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189951_yekonomika_obschestvennogo_sektora_uchebnik.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192107_bustan_avaristan_kniga_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247d7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247D7 3556 bytes
font_01_sfnt_off0002555a.bin
d1094ff9abde77ecc5d5bb8ddc90820f301961e372bed3a04fdee0c7cd4a81e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2555A 14780 bytes
font_02_sfnt_off000283ba.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283BA 14468 bytes
font_03_sfnt_off0002ae6c.bin
84ef4543abfc9e4768b57d3302da77ef232dcab8ea4a49f3c852280f2fdcc666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE6C 6628 bytes
font_04_sfnt_off0002c16d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C16D 6084 bytes
font_05_sfnt_off0002d102.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D102 3752 bytes

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