Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3efe80dd4e9a772…

MALICIOUS

PDF

356.5 KB Created: 2015-08-21 10:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a206ec9a34053cca745e2e32c9f4d5f5 SHA-1: 45e6bde465ecf1b6a4bd4f97dab1f4f58c37a404 SHA-256: e3efe80dd4e9a772995ac684e72a599f34345a42a37d2757031b341b2136dabc
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. An ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, 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 strongly suggests a phishing or redirection attack.

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%92%D0%B8%D0%B4%D0%B5%D0%BE%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%82%D0%BE%D1%80+4home+dvr-217+oe618+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8E&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654731_igra_rao_rao_2_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655560_skachat_igru_smeshariki_kruglaya_kompaniya_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655855_vkantaktuy_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548a9.bin
85c8a268bc56ef39fb67d8b1503f48a2cb76f3d09867ca606dd929bd38943b32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548A9 9824 bytes
font_01_sfnt_off000564ca.bin
79a1a72f8553d389ec7d77803c1f4ab213e3f2608daa9872851abfc0d9ff00d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564CA 14616 bytes

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