Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b0a545b40f0ef8…

MALICIOUS

PDF

184.1 KB Created: 2015-07-30 01:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 27ccbd0d9d1bf6a67231dc1f142a5608 SHA-1: b90c22978941bae1371532c6066dd5c2415ffff7 SHA-256: 55b0a545b40f0ef8546e281ce9a20647a71b2bf9ff46cddf9409be408b59648b
92 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 identified as a malicious redirector, suggesting the document's purpose is to lure users to a harmful site. No scripts were extracted from this sample.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+ifruit+gta+5+%D0%BD%D0%B0+pc&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192125_skachat_besplatno_igru_sims_2_na_netbuk.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4234/4234152_kod_aktivacii_dlya_kasperskogo_2015_besplatno_na_god.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4234/4234095_iscelyayuschie_muysli_sinelnikov_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c1f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C1F 3556 bytes
font_01_sfnt_off000249a2.bin
fd7de723ebd9d1363a858629d3ea4fb0cadd687dc29ae932c2dfae59a08af01e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249A2 14616 bytes
font_02_sfnt_off0002772c.bin
219c8fbbcd3b523642c125fb98256623f742c731991cd2408a9e8f62c8525c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2772C 14852 bytes
font_03_sfnt_off0002a30e.bin
eb99cc1168fae12b4771bab7f8cce949c4d9dd7c2bb8489dcc5c5aa4c48498dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A30E 6812 bytes
font_04_sfnt_off0002b6b6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6B6 6084 bytes
font_05_sfnt_off0002c64b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C64B 3752 bytes

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