Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b10c984adfc09da…

MALICIOUS

PDF

188.2 KB Created: 2015-07-23 20:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f206d98cb8bb4cc5428e6f2386b5d903 SHA-1: d90b7c0e369520157810eb78d180ce04c87c22ab SHA-256: 3b10c984adfc09daacb777d1bc05be5bcc96df2c5938fa4a00f7cc40b65e5d12
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link 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 for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BF%D1%80%D0%B0%D0%B2%D0%BA%D0%B0+%D0%BE+%D1%81%D1%80%D0%B5%D0%B4%D0%BD%D0%B5%D0%BC+%D0%B7%D0%B0%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%BA%D0%B5+%D0%B4%D0%BB%D1%8F+%D1%86%D0%B5%D0%BD%D1%82%D1%80%D0%B0+%D0%B7%D0%B0%D0%BD%D1%8F%D1%82%D0%BE%D1%81%D1%82%D0%B8+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184429_silverfast_ai_studio_8_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184379_korporativnaya_socialnaya_otvetstvennost_uchebnik_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184322_the_klub_17_rusifikator.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b08.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B08 3556 bytes
font_01_sfnt_off0002588b.bin
a6fb7fa48cd68f06291882581eecccf88957198362f2ef8fde2f08a8fbb963d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2588B 15368 bytes
font_02_sfnt_off000287c3.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x287C3 14468 bytes
font_03_sfnt_off0002b275.bin
f26024c91651e72a86ec0c6a855a9b92bc1e5ada9349a731d5759b1826186af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B275 7120 bytes
font_04_sfnt_off0002c72f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C72F 6084 bytes
font_05_sfnt_off0002d6c4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6C4 3752 bytes

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