Malicious PDF — malware analysis report

Static analysis result for SHA-256 f162b95222e9a923…

MALICIOUS

PDF

375.6 KB Created: 2015-08-19 11:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4cfccce5773ef9bf12583a82b11ecbbb SHA-1: 2c80e1f6e8e9d4ac395329892163c232f10288e9 SHA-256: f162b95222e9a923db0726313dcb12cd24c8904b0c63cb7f90a35ac0eed561d7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ClamAV detection further supports its malicious nature, identifying it as Pdf.Dropper.Agent. The embedded URL is the primary indicator of compromise, likely serving as a lure to a malicious site. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence.

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-8790376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790376-0
  • 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%91%D0%B0%D0%B7%D0%B0+%D0%B3%D0%B8%D0%B1%D0%B4%D0%B4+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+2014+%D0%BF%D1%80%D0%BE%D0%B1%D0%B8%D1%82%D1%8C+%D0%B2%D0%BB%D0%B0%D0%B4%D0%B5%D0%BB%D1%8C%D1%86%D0%B0+%D0%BF%D0%BE+%D0%B3%D0%BE%D1%81+%D0%BD%D0%BE%D0%BC%D0%B5%D1%80%D1%83&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496753_kibersantinvestor_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496744_otvetuy_na_biletuy_stropalschika_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496748_karta_belarusi_2015_dlya_navitel_android_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005904d.bin
72e740d448141b229009bd4f6d44666bf01b15942c83b8c078b35ee296d666e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5904D 10108 bytes
font_01_sfnt_off0005acd4.bin
6ad4454e6108fd75df0ec553d5067f1df76f861154814c9dc84c91bcc4fb998e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACD4 15636 bytes

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