Malicious PDF — malware analysis report

Static analysis result for SHA-256 210bd29310c188d4…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 19:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dd1dfb6e8922eea09707ac08ce6b37ad SHA-1: 83d4ea26fdfd1b9158e1169732d6e91173587601 SHA-256: 210bd29310c188d4ed268a0501c0c5f2df14c9273d3cdb2b41f83e5819071512
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL is likely used to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-7629371-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7629371-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC%D0%B0%D0%BD%D0%BD%D1%83%D1%8E+%D0%B8%D0%B3%D1%80%D1%83+swamp+attack+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191065_skachat_realnuye_pacanuy_1_sezon_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191758_skachat_moduy_na_farming_simulyator_2015_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192684_kod_aktivacii_dlya_kasperskogo_internet_sekyuriti_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a9f1.bin
2f546100360e2ae03743b905af42fcd5592f91c7dacaeb56cec23b6e07ce7b11		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A9F1 7552 bytes
font_00_sfnt_off00024453.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24453 3556 bytes
font_01_sfnt_off000251d6.bin
81e381ce68825af21132eb05f115a03b2fd916c81e6c4e5dac814adf31252225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D6 14272 bytes
font_02_sfnt_off00027e30.bin
4064624ee0b1dd322ad5b3940b8204b4de253d8ca64b46cc24d24ea5c2e1d538		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E30 14816 bytes
font_04_sfnt_off0002c046.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C046 6084 bytes
font_05_sfnt_off0002cfdb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFDB 3752 bytes

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