Malicious PDF — malware analysis report

Static analysis result for SHA-256 0038c682688ed86c…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 09:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a793c1079192919910ec247f8e05a684 SHA-1: 92736c5ca76c9c74dc708e4dd0193024db9214fc SHA-256: 0038c682688ed86ce30d9ed18b9be6f4d8d6dbc0a03631940bb1613d95a62d58
92 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, specifically 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 redirector infrastructure. No scripts were extracted, but the presence of the malicious link is sufficient evidence of a phishing or redirection attempt.

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%BA%D0%BD%D0%B8%D0%B6%D0%BD%D1%8B%D0%B5+%D0%BD%D0%BE%D0%B2%D0%B8%D0%BD%D0%BA%D0%B8+2014+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384106_elm327_bluetooth_kod_podklyucheniya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383909_skachat_na_telefon_govoryaschego_kota.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384309_lagoa_multiphysics_10_skachat.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243d5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243D5 3556 bytes
font_01_sfnt_off00025158.bin
a44adbd0dfa5714a1cdec3851cb66d228986151c2fc00fd176e91dc76173e31e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25158 15116 bytes
font_02_sfnt_off00027ff5.bin
6b335a242fe16435bd873b696dbc6c6c17034368faf1ebe90d00e45c70ce1736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FF5 14468 bytes
font_03_sfnt_off0002aaa8.bin
06c66c67a27de59bcbffae61e878a5fb4033f1979c2eba9e3aec87e2e3923950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAA8 7180 bytes
font_04_sfnt_off0002bf7d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF7D 6084 bytes
font_05_sfnt_off0002cf12.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF12 3752 bytes

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