Malicious PDF — malware analysis report

Static analysis result for SHA-256 e135d591eba47b7e…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 15:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b29ac7ff8ab854d1607d94a2dd175ace SHA-1: e0e287951ccf1986db23464dec3a37559cc4bcd1 SHA-256: e135d591eba47b7eafb156a09b1d455f4973cb92b5b7352b103a2e0af9466fa3
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, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. 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%BE%D1%81%D0%BD%D0%BE%D0%B2%D0%BD%D1%8B%D0%B5+%D1%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B5+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189741_skachat_massive_dlya_fl_studio_10_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188503_kod_na_samuye_krutuye_tachki_v_gta_san_andreas.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184660_klyuch_aktivacii_dlya_windows_7_domashnyaya_rasshirennaya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002418d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2418D 3556 bytes
font_01_sfnt_off00024f10.bin
5d84d65d98a79bd6f2a90f149f0804e5e63550ea3b3c0d2f145ca4be04cc64d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F10 15108 bytes
font_02_sfnt_off00027e4b.bin
d129b2306b70ce91da7e21aa5dc95ff0e57120c5b3b157257a57119c7bcd55f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E4B 14640 bytes
font_03_sfnt_off0002a984.bin
a0ed7994847a3ad0158ca13abb64f8c95ee6535c33250666ddd4ceee1553c57a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A984 7372 bytes
font_04_sfnt_off0002bf3c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF3C 6084 bytes
font_05_sfnt_off0002ced1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CED1 3752 bytes

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