Malicious PDF — malware analysis report

Static analysis result for SHA-256 09dbd78e87cc4db6…

MALICIOUS

PDF

187.4 KB Created: 2015-07-24 08:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b5cdede3894c7c225ed9dab413ea696b SHA-1: fcf82b6e2ae0937ad8fd8bfcc60975220578c357 SHA-256: 09dbd78e87cc4db63a323fcffc210c83410010c10709d0776fd22d0d75857599
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a phishing or malware distribution 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%BA%D0%BE%D0%BC%D0%BF%D0%B0%D1%81-3d+v14+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B4%D0%BB%D1%8F+windows+8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184935_skachat_igru_moy_govoryaschiy_kot_tom_na_pk_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184830_primeruy_prezentaciy_v_powerpoint.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185210_serial_mentovskie_voynuy_7_soderzhanie_seriy.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ad07.bin
732566ece7bb06e0fc0fd0d3ff4198b8b02e3635d7c8c2bdedb0d9c3eda99af7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AD07 7704 bytes
font_00_sfnt_off00024492.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24492 3556 bytes
font_01_sfnt_off00025215.bin
4315d21eae607119ca9eb360c08cecbe7e7221311107f6f3c11c8d4a91bacba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25215 15296 bytes
font_02_sfnt_off000281ec.bin
75583efe1e907ab7077f54b2556770fa8746766251a52a2a97793c2d2cfd1135		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281EC 14588 bytes
font_04_sfnt_off0002c3dd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3DD 6084 bytes
font_05_sfnt_off0002d372.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D372 3752 bytes

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