Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04d987ae3039db4…

MALICIOUS

PDF

185.5 KB Created: 2015-07-26 10:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b1ac87e79e056bc10c71fd90eab3914 SHA-1: 4aa6c1b9737299cfe089d9b2c1e1b6dc4009be15 SHA-256: e04d987ae3039db4fc3c9165e758149f5e9d2dcc35786c5ee851faacb1ab8a62
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 compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

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%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D1%8B%D0%B5+%D0%BA%D0%B0%D0%BD%D0%B0%D0%BB%D1%8B+%D1%87%D0%B0%D1%81%D1%82%D0%BE%D1%82%D1%8B+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+2014&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196555_fss4_za_2_kvartal_2015_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199877_foto_pisi_12_letney_devochke.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4209/4209811_nyensi_dryu_zakoldovannaya_karusel_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024028.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24028 3556 bytes
font_01_sfnt_off00024dab.bin
edf3b16b8c8bb7813fd60812ac8cd11d230dcc551c964760d4daeeeccc3e8ccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DAB 15304 bytes
font_02_sfnt_off00027d85.bin
42c2d6690ef73e0db18f8da76bd91688573bbdb2743bb8b8ebdf77a01d7abe55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D85 14468 bytes
font_03_sfnt_off0002a835.bin
350061f48409e36e9d8afcfba733f7062e599428427b2d068e09f21801babec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A835 6868 bytes
font_04_sfnt_off0002bc1d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC1D 6084 bytes
font_05_sfnt_off0002cbb2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBB2 3752 bytes

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