Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b00a87b0ba8736…

MALICIOUS

PDF

340.2 KB Created: 2015-08-28 13:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cce7082369fced976923f3d340441e27 SHA-1: 68cc0be19b84ea4d764ab51bf650a8953636dc48 SHA-256: 45b00a87b0ba873609ef9fa98854f9a0a47f02b8941dd5ccba2c9fdd829475af
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/?lip&keyword=%D0%BA%D1%80%D1%8F%D0%BA+%D1%84%D0%BE%D1%82%D0%BE%D1%88%D0%BE%D0%BF+cs6&charset=utf-8, is the primary indicator of compromise. No scripts were extracted, and the document body was unreadable, 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%BA%D1%80%D1%8F%D0%BA+%D1%84%D0%BE%D1%82%D0%BE%D1%88%D0%BE%D0%BF+cs6&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803929_chestvovanie__mnogodetnuyh__materey_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803891_skachat__mayn__kraft_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802760_kosmicheskie__reyndzheruy__2_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050cf3.bin
69ab4c2fc395635511889f3578adf8f0ebc82e552def5100bc9c1c0fe641c606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50CF3 8984 bytes
font_01_sfnt_off00052573.bin
6c3022686f7af4f1e82e0248e664edc664c43925576ed703004ee1a5157f504a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52573 13776 bytes

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