Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc923d5aafe3156a…

MALICIOUS

PDF

186.3 KB Created: 2015-08-05 14:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: df43f685efdc4c98fc6c37439aeadbfe SHA-1: b0edcfb435d06158a38e0a000357471786f12e70 SHA-256: dc923d5aafe3156ab3fdede2017e28035543a61a2b490bb272a5c2187bf11ec0
92 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 primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing page. No scripts were extracted from this sample, limiting further analysis of its behavior.

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%B8%D1%82%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B0+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304827_skachat_kartu_rossii_dlya_navitel_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304601_skachat_mod_vlastelin_kolec_na_maynkraft_164.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304823_skachat_pro_evolution_soccer_2011.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002458e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2458E 3556 bytes
font_01_sfnt_off00025311.bin
09de2282c8eb307e335dcce2f19fe19243504cce40adc37ed65395045d000c03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25311 14616 bytes
font_02_sfnt_off000280ff.bin
bb894b7c6ad023d255aa3cf8cbf8e080b08f99bce04e158af6565ef2e2f799a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280FF 14468 bytes
font_03_sfnt_off0002abb4.bin
37d93a6d6227a97bc4029747d3ca7f30c6eeca7d78fa66938000b3c1ffdc1e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABB4 6844 bytes
font_04_sfnt_off0002bf67.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF67 6084 bytes
font_05_sfnt_off0002cefc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEFC 3752 bytes

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