Malicious PDF — malware analysis report

Static analysis result for SHA-256 3928f5b9f53e50b6…

MALICIOUS

PDF

185.9 KB Created: 2015-08-08 09:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 315976ef4f496213a540d71bc59db9c0 SHA-1: 087960d99219da9ebbb37f449503ce1b301f51d8 SHA-256: 3928f5b9f53e50b651d85a461cb15c9ede3e79f4a1055ce3fef23919459331e5
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a malicious site, likely for phishing or malware delivery. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, limiting further analysis of the 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=two+steps+from+hell+strength+of+a+thousand+men+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383790_ts9705b_proshivka.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384230_maks_korzh_zhit_v_kayf_albom_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384067_fotki_krasivuyh_parney_15_let.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a85f.bin
ce0446411706a18ea6e025a7e9f520d2d2a6573d8f611659149e5ff88360052d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A85F 7352 bytes
font_00_sfnt_off00023f32.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F32 3556 bytes
font_01_sfnt_off00024cb5.bin
61dea1932af5c5e93d16b1742ac9b696ba6b52b61c54cf2476e2cb479dd38299		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB5 15276 bytes
font_02_sfnt_off00027c29.bin
818bc6ccd0d17f1553b44bb770ac7c9e50ddc0c87ee61956e746a77256d17995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C29 15012 bytes
font_04_sfnt_off0002bde7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDE7 6084 bytes
font_05_sfnt_off0002cd7c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD7C 3752 bytes

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