Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afa609497620b83…

MALICIOUS

PDF

300.8 KB Created: 2015-08-29 11:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f8c7da8d9025aead7e813bca67909fb0 SHA-1: 31c092d7d2f7a2b841cad72e279d5972661c8691 SHA-256: 5afa609497620b8301792628c33cf7b5caffdea1ac262025f8cd8cbb77c1b38e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. While no scripts were directly extracted, the PDF structure and the malicious URL suggest a phishing or redirection attack. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7618

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%B7%D0%B2%D1%83%D0%BA+%D1%85%D0%BB%D1%8B%D1%81%D1%82%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829980_skachat__counterstrike__source_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829910_unturned__30_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829967_panov__krasnuye__kamni_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000465c4.bin
9d8a40f875905de8b74fee55433c5a2200f8e6fa828c3bc42f86a9aa2f2ceae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x465C4 8484 bytes
font_01_sfnt_off00047e0b.bin
7f7685a0cba49ef647822a441a3f84261e4bb68c71cb90a11db272cab1ef0eb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47E0B 17580 bytes

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