Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e72ee257b9f5ee…

MALICIOUS

PDF

185.7 KB Created: 2015-07-26 00:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0c696ce4c432effd66986bad4bfb8254 SHA-1: 40acac93861323ebc5373611e0abcaecfe3dbdd7 SHA-256: 82e72ee257b9f5eef2ccad619d384114a9df5e2ec503359dc8fcb1ef7b482c9c
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 points to botcraftman.ru, which is associated with malicious redirectors. No scripts were extracted, but the presence of the 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=%D0%A1%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D1%81%D0%B2%D0%B0%D1%82%D0%BE%D0%B2%D1%81%D1%82%D0%B2%D0%B0+%D1%81%D0%BE+%D1%81%D1%82%D0%BE%D1%80%D0%BE%D0%BD%D1%8B+%D0%B6%D0%B5%D0%BD%D0%B8%D1%85%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4206/4206891_narodnaya_solyanka___dmx___oop___ma___k_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189954_spin_tires_2009_polnaya_versiya_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199940_trap_drum_pads_24_android_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244d8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244D8 3556 bytes
font_01_sfnt_off0002525b.bin
c1cca6f3483590bc99bebeb00b4fb8603ed1ef5a47ccb9dabc872a871456b875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2525B 14604 bytes
font_02_sfnt_off00027f44.bin
b4b78b71441c848d9cb267a1fe8d0da42235ee9c67d6c7dccc3c5bcd076ef03f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F44 14532 bytes
font_03_sfnt_off0002aa33.bin
3842c8db24a301e804f72aaacb13e3e9b30aed3b22acaa164d058fe85132fd0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA33 6572 bytes
font_04_sfnt_off0002bce4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCE4 6084 bytes
font_05_sfnt_off0002cc79.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC79 3752 bytes

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