Malicious PDF — malware analysis report

Static analysis result for SHA-256 7683f49f78e4317e…

MALICIOUS

PDF

352.0 KB Created: 2015-08-28 11:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8705ae7389402cc26b7e47be09d4fa5a SHA-1: c9cfd0ba276e2606c6d784580ec2f1eaff7f4a0c SHA-256: 7683f49f78e4317e39afb412540d23e4f51660ecc05d621ec85bf53aef989a3b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This URL is likely used to lure users to a malicious site. The ML classifier also flagged the document with high confidence. No scripts were extracted, but the presence of a malicious URL suggests an attempt to download further payloads or phish for credentials.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+gangstar+vegas+trashbox&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802369_slavyanoariyskie__veduy__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802373_windows__7__torrent_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802376_skachat__zhestokoe_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000533aa.bin
f80ed87f7aa47bbd64b34657c5afc2ca92c5786ef0aff3199fa025aede717421		 pdf-font-stream PDF embedded font (sfnt) at offset 0x533AA 9588 bytes
font_01_sfnt_off00054e52.bin
82a1dd91690a01d943b70c3384f321ac97ba91f1f0c24a561ce17fce15621c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E52 16612 bytes

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