Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91046f5dce2ef8e…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 23:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2c965bf735231a6b13f0b80f069fdca1 SHA-1: 947d79420885a9247ce4c18681e40facc817e085 SHA-256: f91046f5dce2ef8ee1e0e1b302a82a77098e5a4a5980c0bf1649169a67f041a9
92 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 URL `http://botcraftman.ru/` is identified as malicious infrastructure, suggesting the document's purpose is to lure the user to a harmful site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%B0%D1%80%D1%82%D1%83+%D0%BC%D0%BE%D1%80%D1%81%D0%BA%D0%BE%D0%B9+%D0%B1%D0%BE%D0%B9+%D0%BD%D0%B0+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191580_skachat_blank_studencheskogo_bileta.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194283_root_prava_na_android_bez_kompyutera.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189674_roadnumbers_shrift_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002466d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2466D 3556 bytes
font_01_sfnt_off000253f0.bin
c66302b070e0d259b12e6884d67a70d816c07317d5497e0ca7334f74d18a16cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253F0 14856 bytes
font_02_sfnt_off000281ee.bin
d09923cbdc305950305c98b16fd731505617ef87fa48d967c0f3dc823af7b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281EE 14640 bytes
font_03_sfnt_off0002ad21.bin
83e934e3a2e4f3b4b6f9a1b5d130a12d8f02322fb2adbdd8ddc541b370ba8e22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD21 6868 bytes
font_04_sfnt_off0002c11d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C11D 6084 bytes
font_05_sfnt_off0002d0b2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0B2 3752 bytes

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