Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a12eb762d83812…

MALICIOUS

PDF

351.4 KB Created: 2015-08-28 10:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ade95ed26493e17b15cfaefbf0e52f30 SHA-1: c40f62bcdf89717b004ca5bddb415b4758a36694 SHA-256: f3a12eb762d838129d49bb4c7a75d1303d9b39467728a1f12c80e962fa3bdf00
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 linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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=1%D1%81-%D0%B1%D0%B8%D1%82%D1%80%D0%B8%D0%BA%D1%8124+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4794/4794287_ramki__dlya__fotografiy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4791/4791227_stalker__lost__alfa_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4794/4794374_kak__zarabotat__deneg_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f9a.bin
82982ec1dd3d5b4deb9185759999b878fcd2b1131c78d0fa6df22bcc8a92577b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9A 7204 bytes
font_01_sfnt_off000554bf.bin
f119296ae01cc051c1b079aa50ed8fca9a09d768ba7b6cb1df5e6264782283a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554BF 12852 bytes

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