Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c89f75930b48db4…

MALICIOUS

PDF

187.3 KB Created: 2015-07-23 23:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c39d66765d7cd0e3efac028ba8c70684 SHA-1: ad5b59d3274a759838483dfa99de7a32ab0ae307 SHA-256: 1c89f75930b48db4dd946f072b63bcb7c00225e787d7cec74e2d4935df34b8e8
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/` is associated with malicious activity, suggesting the document is designed to lure users to a harmful site. No scripts were extracted, and the document body was not parsable.

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%A7%D0%B8%D1%82%D1%8B+%D0%BD%D0%B0+Contract+Wars+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D1%88%D1%83%D1%82%D0%B5%D1%80+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185617_dogovor_na_montazh_sistemuy_otopleniya_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184652_programma_dlya_raspoznavaniya_rukopisnogo_teksta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185228_yandeks_bar_dlya_firefox_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ade5.bin
8f4316f1afd72d4d2f864bfa1ec08f78062962bdf462c01cff3c8654e79d7103		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ADE5 7376 bytes
font_00_sfnt_off00024636.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24636 3556 bytes
font_01_sfnt_off000253b9.bin
fa2c7c84fc8a05898030de6402a698c0c40ad17a6dc01c15f7267f4466199615		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253B9 15040 bytes
font_02_sfnt_off0002824b.bin
bcae0fe46a057ea82cf351960628d344de70b0e378ba72901c752147851a2d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2824B 14964 bytes
font_04_sfnt_off0002c37e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C37E 6084 bytes
font_05_sfnt_off0002d313.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D313 3752 bytes

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