Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadb975e10da222b…

MALICIOUS

PDF

185.5 KB Created: 2015-07-28 11:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ae13899e66e9b193233c4c76e029c681 SHA-1: 2637ebcad8c9c4719d4c5abf7c73adb5019272e5 SHA-256: cadb975e10da222b1a47b3d4e56bd89366175ceb71d7313d41761de4780a0887
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 assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download 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=opera+1217+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81+%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D1%81%D0%B0%D0%B9%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4232/4232017_dolina_volkov_1_sezon_vse_serii_na_russkom_yazuyke.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4226/4226124_skachat_programmu_podbor_pricheski_po_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200639_photoshop_cs6_skachat_torrent_mac_os_rus.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002426a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2426A 3556 bytes
font_01_sfnt_off00024fed.bin
604140ff7689a5fd6ef39a14582ed5b498240cad4df32e7190e401807ca60167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FED 14380 bytes
font_02_sfnt_off00027cd3.bin
0fa350152fa028be51bb878d9b01414019031dd6881c2b1c98747a9e5d3b8981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD3 14680 bytes
font_03_sfnt_off0002a7c9.bin
09bd66292b3c1539dd8b849ab8400eb8a838670fa1c5eb9e55305d981d7f225b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7C9 7060 bytes
font_04_sfnt_off0002bc5b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC5B 6084 bytes
font_05_sfnt_off0002cbf0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBF0 3752 bytes

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