Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7d2e5c357f4a6d…

MALICIOUS

PDF

184.7 KB Created: 2015-07-24 04:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 066c1f758767f5aaeb2bb065ede5fabb SHA-1: e31c871ca9635b4791f6b7f9c1b73fab0fb0ba5e SHA-256: ec7d2e5c357f4a6def7f8dc07d37e1b6f406d94cf06cc1030f5c8ba17ebf12f0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/` is a strong indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

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=Sims+4+%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+mac+os&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187540_skachat_chit_na_realuy_v_muyshinuyh_begah_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186256_sanatoriy_chistuyy_klyuch_oficialnuyy_sayt.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185177_skachat_chituy_na_igru_contract_wars_online_3d.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a501.bin
cd0f9269d3a686c965807e405d43daa6f5b3576376643155120eeb739dce8abf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A501 6940 bytes
font_00_sfnt_off00023ed4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23ED4 3556 bytes
font_01_sfnt_off00024c57.bin
ee971bd2a4399ad30b9ca49685088080207631a99c04d8373003bd57c094b693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C57 14488 bytes
font_02_sfnt_off00027934.bin
b068c7537d25eeed308cecb0a284c8f976abd174851349f9f1b33bee54c86e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27934 14848 bytes
font_04_sfnt_off0002b8fb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8FB 6084 bytes
font_05_sfnt_off0002c890.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C890 3752 bytes

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