Malicious PDF — malware analysis report

Static analysis result for SHA-256 64188be920bf5035…

MALICIOUS

PDF

187.3 KB Created: 2015-07-24 04:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e37ec6530c8970c83e79226da348c478 SHA-1: 2d30fa3ded69c61317dcb2e45e96d9a895b25b75 SHA-256: 64188be920bf503595de19969bbe7cc4530ac9639939e0622fefa70f31d6f813
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, and contains a link to a known malicious redirector. The presence of embedded URLs and the nature of the detection suggest this file is designed to lure users to malicious infrastructure. No scripts were extracted, but the PDF structure itself is indicative of a dropper or downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7494152-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494152-0
  • 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%BD%D0%B5+%D0%BD%D0%B0%D0%B9%D0%B4%D0%B5%D0%BD+%D0%BD%D0%B5%D0%BE%D0%B1%D1%85%D0%BE%D0%B4%D0%B8%D0%BC%D1%8B%D0%B9+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D0%B0+%D0%BE%D0%BF%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D1%85+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185704_skachat_gta_san_andreas_s_modami_cherez_torrent_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185477_skachat_drayvera_dlya_noutbuka_compaq_presario_cq_57.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188013_menyu_dlya_kafe_obrazec_kakie_blyuda.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024980.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24980 3556 bytes
font_01_sfnt_off00025703.bin
8127fa32cd6c9fefa3ca8ede7715038d136d0f5761de69ce64989173551155a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25703 14520 bytes
font_02_sfnt_off000283f1.bin
c947384ca9da6b338a802e2d79393af65bbc7ec579a56be2392c779918975b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283F1 14532 bytes
font_03_sfnt_off0002aee4.bin
af3c269a218e697c666d6c5f6a1931809603c4d081c0a163c42e8fc3a7e7304b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEE4 7068 bytes
font_04_sfnt_off0002c359.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C359 6084 bytes
font_05_sfnt_off0002d2ee.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2EE 3752 bytes

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