Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7ad007e9d29468…

MALICIOUS

PDF

304.5 KB Created: 2015-08-21 09:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7335726148d8d7e2e3f0acb2a6d44af9 SHA-1: 5df55966d5d5793d5134365f4df41fc33b96b854 SHA-256: 0c7ad007e9d29468050def1c88d2ea210811b612f3c01ae5c4a307ff99053960
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7490

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%A4%D0%BE%D1%85%D0%B8%D1%88%D0%B0+%D0%BA%D0%B8%D0%B7%D0%BB%D0%B0%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654676_chek_order_sberbanka_shrift.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654678_skachat_multfilm_holodnoe_serdce_2013_cherez_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654686_wifi_password_hack_v5_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000474a6.bin
6006a83ec54886489f99cedc11d3a770e81ddbaca089d91839471a73bd312cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x474A6 8220 bytes
font_01_sfnt_off00048cb7.bin
787354b4433d04d7b9c3c577cbab09f83aead50004df78e256fbcc8bd995f22d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48CB7 18032 bytes

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