Malicious PDF — malware analysis report

Static analysis result for SHA-256 2806a8f62d1d60b1…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 13:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: be62e836807ee8c14398a86e675b29f5 SHA-1: 420322948a5c2e8e3faaa7aedc2afdb47648da2f SHA-256: 2806a8f62d1d60b12ba599e2f5b35bba2cd49b17fd6baa3ad3649ea7ea59af20
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the embedded URL, which likely serves as a lure to a phishing or malware distribution site.

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%BF%D0%B4%D0%B4+2015+%D0%B1%D0%B5%D0%BB%D0%B0%D1%80%D1%83%D1%81%D1%8C+%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//4188/4188877_paramonova_razvivayuschie_zanyatiya_s_detmi_34_let_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190955_kalkulyator_kodov_razblokirovki_magnitol.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183174_kursovoy_proekt_po_arhitekture_mnogoyetazhnuyy_zhiloy_dom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e29.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E29 3556 bytes
font_01_sfnt_off00024bac.bin
d08e0aa3b4e7487807cb07458f9d1644470bbce0fc0ba466d69b51e4e5fb77e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BAC 14324 bytes
font_02_sfnt_off000278e5.bin
b4e7262d3c265b9c03968570e6910e5029d70de81bf1212fa54e1ea61326de8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278E5 14640 bytes
font_03_sfnt_off0002a41c.bin
8d77a163203bfd2c061c31793999bd2f49cfa01192a06fe2955101ed2e27aba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A41C 6668 bytes
font_04_sfnt_off0002b75c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B75C 6084 bytes
font_05_sfnt_off0002c6f1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6F1 3752 bytes

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