Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c3bc1c0bd32850…

MALICIOUS

PDF

367.6 KB Created: 2015-08-20 07:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: df0e398dd1dc4cfe9c4cef9385f137eb SHA-1: 2d126af719c7a892942fb79559e97216aa47e6f6 SHA-256: b2c3bc1c0bd32850ffa6a4e6119920004ec15debbf8bf80922966c52fc345102
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a malicious site. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious redirector attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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-8789131-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789131-0
  • 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=18+%D1%81%D1%82%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D1%85+%D0%BA%D0%BE%D0%BB%D0%B5%D1%81+%D0%BF%D0%BE+%D0%B4%D0%BE%D1%80%D0%BE%D0%B3%D0%B0%D0%BC+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638803_kartuy_dlya_igo_primo_2014_windows_ce_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638812_mobilnuyy_kriminalist_2015_crack.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638801_simulyator_bmp_2_igra.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057180.bin
bce9c2aa68353361a5a68d4a34089a245a9335db008a94acae3a6f6e8f6501b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57180 9568 bytes
font_01_sfnt_off00058c4f.bin
201bdb8cf816f7d8c8eedb729360a1dfffea1f151dbd1732b341541d1c888a1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C4F 16508 bytes

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