Malicious PDF — malware analysis report

Static analysis result for SHA-256 2841e945701c578c…

MALICIOUS

PDF

184.7 KB Created: 2015-08-06 17:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 07b754170ca526480812bc08e8d92a9b SHA-1: 4201a66f9b8d8430540ea18519bd143899566be0 SHA-256: 2841e945701c578cc70c8cf654d229290fa3b3e94f85c1a1ffb9aba932c48876
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, but the presence of a malicious link suggests a phishing or malware delivery 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%81%D0%BE%D0%BA%D1%80%D0%BE%D0%B2%D0%B8%D1%89%D0%B5+%D0%BF%D0%B8%D1%80%D0%B0%D1%82%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4312/4312954_karta_dlya_maynkraft_152_gorod.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4310/4310923_ofisnuye_programmuy_dlya_nokia_5800.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304540_yuriy_sigov_singapur_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024038.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24038 3556 bytes
font_01_sfnt_off00024dbb.bin
0ee5f41a6502d3b1fa7576600f30e16daea7f20dc7c85c3c59c3a8725adc5c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DBB 14780 bytes
font_02_sfnt_off00027b9d.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B9D 14468 bytes
font_03_sfnt_off0002a64f.bin
f20435b35557eaca49a4cb2b19c8dd61421bfd75eb1ccc11c6fcd80600930fb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A64F 6504 bytes
font_04_sfnt_off0002b8d6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8D6 6084 bytes
font_05_sfnt_off0002c86b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C86B 3752 bytes

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