Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacbf82a71db2da7…

MALICIOUS

PDF

187.4 KB Created: 2015-08-08 10:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 325bd2931d3f63813a41d2e6414a2da7 SHA-1: 15ff3372262bf9aa53d386904ee6f6b840c18cce SHA-256: eacbf82a71db2da7fa42fa35b298f07350844cabb980f71f54390f8e94e5d653
90 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 strongly indicated maliciousness. The primary IOC is the malicious URL embedded within the document. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B1%D0%BE%D0%BB%D1%8C%D1%88%D0%B0%D1%8F+%D1%80%D0%B0%D0%B7%D0%BD%D0%B8%D1%86%D0%B0+%D0%BF%D0%B0%D1%80%D0%BE%D0%B4%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%81%D0%BB%D1%83%D0%B6%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D1%86%D0%B5%D1%80%D0%BA%D0%B2%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384830_karta_moskvuy_dlya_android_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384176_critical_strike_portable___pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384779_skachat_demiurgi_2_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247fe.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247FE 3556 bytes
font_01_sfnt_off00025581.bin
ff0b3a9ddd37fb1ebf6667c391861123938a96c723ab1ce759a07bccba0c8d8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25581 14988 bytes
font_02_sfnt_off000283d3.bin
90abba30559710a46da0321dde7a2547102e05edb710c1ff5845bb39e74190e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283D3 14520 bytes
font_03_sfnt_off0002aea4.bin
beabf7604bf096340421d0343eeacd2fc0c0848b6d65c5f29c589eb43380c10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEA4 7248 bytes
font_04_sfnt_off0002c3ab.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3AB 6084 bytes
font_05_sfnt_off0002d340.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D340 3752 bytes

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